Vertical ScrollBar of QTableWidget not moving as expected
-
Hi,
I am using QTableWidget for creating a table of 513 rows and 9 columns.
Naturally, for seeing all the rows, I need to use Vertical ScrollBar of QTableWidget.I set the maximum, minimum, page step and single step ..
ui->tableWidget->verticalScrollBar()->setMaximum(513);
ui->tableWidget->verticalScrollBar()->setMinimum(0);
ui->tableWidget->verticalScrollBar()->setSingleStep(1);
ui->tableWidget->verticalScrollBar()->setPageStep(10);
ui->tableWidget->setVerticalScrollMode(QAbstractItemView::ScrollPerItem);And then I am using an Up Push Button for moving Page up and Down Push Button for moving Page down.
And for Down PB, this is the code:
int scroll = ui->tableWidget->verticalScrollBar()->value();
ui->tableWidget->verticalScrollBar()->setValue((scroll + 10));But this is not moving as expected.
One observation I made is, maximum is automatically changed to 2 and page size to 512.Is there any more settings to do?
-
Hi,
Why are you setting the minimum and maximum value of the scrollbar ? These are usually calculated for your base on the model content.
-
Hi SGaist,
Thank You for the reply.
By default the maximum is 2 and page step is 512.
So when I press Down key, ui->tableWidget->verticalScrollBar()->value() is changing from 0 to 2 only.
This is equivalent to moving a single row only.This is the case, even after adding dummy contents in all the cells.
I think maximum() is not calculated correctly. I am missing something...
Any ideas...please
-
Show your complete code, otherwise we can only do speculations.
-
Hi SGaist,
Thank You for the reply and supporting.
The full code is given below.
form_Table() shall be executed in a while loop and Key_Up_Routine and Key_Down_Routine whenever keys are pressed.
form_Table {
QTableWidgetItem * Display_item_0_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_0_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_0_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_0_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_0_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_0_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_0_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_0_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_0_8 = new QTableWidgetItem("8"); QTableWidgetItem * Display_item_513_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_513_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_513_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_513_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_513_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_513_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_513_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_513_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_513_8 = new QtableWidgetItem("8");.........
.........
.........QTableWidgetItem * Display_item_513_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_513_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_513_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_513_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_513_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_513_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_513_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_513_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_513_8 = new QtableWidgetItem("8"); ui->tableWidget->setGeometry(-2,40,804,15424); ui->tableWidget->horizontalHeader()->setDefaultSectionSize(80); ui->tableWidget->verticalHeader()->setDefaultSectionSize(30); ui->tableWidget->setRowCount(514); ui->tableWidget->setColumnCount(9); ui->tableWidget->setColumnWidth(0,80); ui->tableWidget->setColumnWidth(1,80); ui->tableWidget->setColumnWidth(2,80); ui->tableWidget->setColumnWidth(3,80); ui->tableWidget->setColumnWidth(4,80); ui->tableWidget->setColumnWidth(5,80); ui->tableWidget->setColumnWidth(6,80); ui->tableWidget->setColumnWidth(7,80); ui->tableWidget->setColumnWidth(8,80); QStringList horz_header; horz_header.clear(); horz_header.append(“T1”); horz_header.append(“T2”); horz_header.append(“T3”); horz_header.append(“T4”); horz_header.append(“T5”); horz_header.append(“T6”); horz_header.append(“T7”); horz_header.append(“T8”); horz_header.append(“T9”); ui->tableWidget->setHorizontalHeaderLabels(horz_header); QStringList vert_header; vert_header.clear(); vert_header.append("P1"); vert_header.append("P2"); vert_header.append("P3"); vert_header.append("P4"); ui->tableWidget->setVerticalHeaderLabels(vert_header); ui->tableWidget->horizontalHeader()->setVisible(true); ui->tableWidget->verticalHeader()->setVisible(true); ui->tableWidget-setVerticalScrollMode(QAbstractItemView::ScrollPerItem); ui->tableWidget->setAutoScroll(false); ui->tableWidget->setItem(0,0,Display_item_0_0); ui->tableWidget->setItem(0,1,Display_item_0_1); ui->tableWidget->setItem(0,2,Display_item_0_2); ui->tableWidget->setItem(0,3,Display_item_0_3); ui->tableWidget->setItem(0,4,Display_item_0_4); ui->tableWidget->setItem(0,5,Display_item_0_5); ui->tableWidget->setItem(0,6,Display_item_0_6); ui->tableWidget->setItem(0,7,Display_item_0_7); ui->tableWidget->setItem(0,8,Display_item_0_8); ui->tableWidget->setItem(1,0,Display_item_1_0); ui->tableWidget->setItem(1,1,Display_item_1_1); ui->tableWidget->setItem(1,2,Display_item_1_2); ui->tableWidget->setItem(1,3,Display_item_1_3); ui->tableWidget->setItem(1,4,Display_item_1_4); ui->tableWidget->setItem(1,5,Display_item_1_5); ui->tableWidget->setItem(1,6,Display_item_1_6); ui->tableWidget->setItem(1,7,Display_item_1_7); ui->tableWidget->setItem(1,8,Display_item_1_8);.........
.........
..........ui->tableWidget_FDP->setItem(513,0,FDP_Display_item_513_0);
ui->tableWidget_FDP->setItem(513,1,FDP_Display_item_513_1);
ui->tableWidget_FDP->setItem(513,2,FDP_Display_item_513_2);
ui->tableWidget_FDP->setItem(513,3,FDP_Display_item_513_3);
ui->tableWidget_FDP->setItem(513,4,FDP_Display_item_513_4);
ui->tableWidget_FDP->setItem(513,5,FDP_Display_item_513_5);
ui->tableWidget_FDP->setItem(513,6,FDP_Display_item_513_6);
ui->tableWidget_FDP->setItem(513,7,FDP_Display_item_513_7);
ui->tableWidget_FDP->setItem(513,8,FDP_Display_item_513_8);ui->tableWidget_FDP->setSelectionBehavior(QAbstractItemView::SelectItems);
ui->tableWidget_FDP->setSelectionMode(QAbstractItemView::SingleSelection);
ui->tableWidget_FDP->setShowGrid(true);
ui->tableWidget_FDP->horizontalHeader()->setSectionsMovable(true);
ui->tableWidget_FDP->horizontalHeader()->setSectionsClickable(true);
ui->tableWidget_FDP->horizontalHeader()->etSectionResizeMode(QHeaderView::Fixed);}
Key_Up_Routine {
int scroll;
qDebug("current value = %d ", ui->tableWidget_FDP->verticalScrollBar()->value()); scroll = ui->tableWidget_FDP->verticalScrollBar()->value(); if(scroll >= 10) { ui->tableWidget_FDP->verticalScrollBar()->setValue((scroll - 10)); } qDebug("new value = %d ", ui->tableWidget_FDP->verticalScrollBar()->value());}
Key_Down_Routine {
int scroll;qDebug("current value = %d ", ui->tableWidget_FDP->verticalScrollBar()->value());scroll = ui->tableWidget_FDP->verticalScrollBar()->value();
ui->tableWidget_FDP->verticalScrollBar()->setValue((scroll + 10));
qDebug("new value = %d ", ui->tableWidget_FDP->verticalScrollBar()->value());}
-
Hi,
Some mistakes in previous mail. Please ignore that. The code sample I am using is as given below.
form_Table {
QTableWidgetItem * Display_item_0_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_0_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_0_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_0_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_0_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_0_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_0_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_0_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_0_8 = new QTableWidgetItem("8"); QTableWidgetItem * Display_item_1_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_1_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_1_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_1_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_1_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_1_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_1_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_1_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_1_8 = new QtableWidgetItem("8");.........
.........
.........QTableWidgetItem * Display_item_513_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_513_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_513_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_513_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_513_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_513_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_513_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_513_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_513_8 = new QtableWidgetItem("8"); ui->tableWidget->setGeometry(-2,40,804,15424); ui->tableWidget->horizontalHeader()->setDefaultSectionSize(80); ui->tableWidget->verticalHeader()->setDefaultSectionSize(30); ui->tableWidget->setRowCount(514); ui->tableWidget->setColumnCount(9); ui->tableWidget->setColumnWidth(0,80); ui->tableWidget->setColumnWidth(1,80); ui->tableWidget->setColumnWidth(2,80); ui->tableWidget->setColumnWidth(3,80); ui->tableWidget->setColumnWidth(4,80); ui->tableWidget->setColumnWidth(5,80); ui->tableWidget->setColumnWidth(6,80); ui->tableWidget->setColumnWidth(7,80); ui->tableWidget->setColumnWidth(8,80); QStringList horz_header; horz_header.clear(); horz_header.append(“T1”); horz_header.append(“T2”); horz_header.append(“T3”); horz_header.append(“T4”); horz_header.append(“T5”); horz_header.append(“T6”); horz_header.append(“T7”); horz_header.append(“T8”); horz_header.append(“T9”); ui->tableWidget->setHorizontalHeaderLabels(horz_header); QStringList vert_header; vert_header.clear(); vert_header.append("P1"); vert_header.append("P2"); vert_header.append("P3"); vert_header.append("P4"); ui->tableWidget->setVerticalHeaderLabels(vert_header); ui->tableWidget->horizontalHeader()->setVisible(true); ui->tableWidget->verticalHeader()->setVisible(true); ui->tableWidget-setVerticalScrollMode(QAbstractItemView::ScrollPerItem); ui->tableWidget->setAutoScroll(false); ui->tableWidget->setItem(0,0,Display_item_0_0); ui->tableWidget->setItem(0,1,Display_item_0_1); ui->tableWidget->setItem(0,2,Display_item_0_2); ui->tableWidget->setItem(0,3,Display_item_0_3); ui->tableWidget->setItem(0,4,Display_item_0_4); ui->tableWidget->setItem(0,5,Display_item_0_5); ui->tableWidget->setItem(0,6,Display_item_0_6); ui->tableWidget->setItem(0,7,Display_item_0_7); ui->tableWidget->setItem(0,8,Display_item_0_8); ui->tableWidget->setItem(1,0,Display_item_1_0); ui->tableWidget->setItem(1,1,Display_item_1_1); ui->tableWidget->setItem(1,2,Display_item_1_2); ui->tableWidget->setItem(1,3,Display_item_1_3); ui->tableWidget->setItem(1,4,Display_item_1_4); ui->tableWidget->setItem(1,5,Display_item_1_5); ui->tableWidget->setItem(1,6,Display_item_1_6); ui->tableWidget->setItem(1,7,Display_item_1_7); ui->tableWidget->setItem(1,8,Display_item_1_8);.........
.........
..........ui->tableWidget->setItem(513,0,FDP_Display_item_513_0);
ui->tableWidget->setItem(513,1,FDP_Display_item_513_1);
ui->tableWidget->setItem(513,2,FDP_Display_item_513_2);
ui->tableWidget->setItem(513,3,FDP_Display_item_513_3);
ui->tableWidget->setItem(513,4,FDP_Display_item_513_4);
ui->tableWidget->setItem(513,5,FDP_Display_item_513_5);
ui->tableWidget->setItem(513,6,FDP_Display_item_513_6);
ui->tableWidget->setItem(513,7,FDP_Display_item_513_7);
ui->tableWidget->setItem(513,8,FDP_Display_item_513_8);ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectItems);
ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
ui->tableWidget->setShowGrid(true);
ui->tableWidget->horizontalHeader()->setSectionsMovable(true);
ui->tableWidget->horizontalHeader()->setSectionsClickable(true);
ui->tableWidget->horizontalHeader()->etSectionResizeMode(QHeaderView::Fixed);}
Key_Up_Routine {
int scroll;
qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value()); scroll = ui->tableWidget->verticalScrollBar()->value(); if(scroll >= 10) { ui->tableWidget->verticalScrollBar()->setValue((scroll - 10)); } qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
Key_Down_Routine {
int scroll;qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value());scroll = ui->tableWidget->verticalScrollBar()->value();
ui->tableWidget->verticalScrollBar()->setValue((scroll + 10));
qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
-
Hi,
Some mistakes in previous mail. Please ignore that. The code sample I am using is as given below.
form_Table {
QTableWidgetItem * Display_item_0_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_0_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_0_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_0_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_0_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_0_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_0_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_0_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_0_8 = new QTableWidgetItem("8"); QTableWidgetItem * Display_item_1_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_1_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_1_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_1_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_1_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_1_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_1_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_1_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_1_8 = new QtableWidgetItem("8");.........
.........
.........QTableWidgetItem * Display_item_513_0 = new QTableWidgetItem("0"); QTableWidgetItem * Display_item_513_1 = new QTableWidgetItem("1"); QTableWidgetItem * Display_item_513_2 = new QTableWidgetItem("2"); QTableWidgetItem * Display_item_513_3 = new QTableWidgetItem("3"); QTableWidgetItem * Display_item_513_4 = new QTableWidgetItem("4"); QTableWidgetItem * Display_item_513_5 = new QTableWidgetItem("5"); QTableWidgetItem * Display_item_513_6 = new QTableWidgetItem("6"); QTableWidgetItem * Display_item_513_7 = new QTableWidgetItem("7"); QTableWidgetItem * Display_item_513_8 = new QtableWidgetItem("8"); ui->tableWidget->setGeometry(-2,40,804,15424); ui->tableWidget->horizontalHeader()->setDefaultSectionSize(80); ui->tableWidget->verticalHeader()->setDefaultSectionSize(30); ui->tableWidget->setRowCount(514); ui->tableWidget->setColumnCount(9); ui->tableWidget->setColumnWidth(0,80); ui->tableWidget->setColumnWidth(1,80); ui->tableWidget->setColumnWidth(2,80); ui->tableWidget->setColumnWidth(3,80); ui->tableWidget->setColumnWidth(4,80); ui->tableWidget->setColumnWidth(5,80); ui->tableWidget->setColumnWidth(6,80); ui->tableWidget->setColumnWidth(7,80); ui->tableWidget->setColumnWidth(8,80); QStringList horz_header; horz_header.clear(); horz_header.append(“T1”); horz_header.append(“T2”); horz_header.append(“T3”); horz_header.append(“T4”); horz_header.append(“T5”); horz_header.append(“T6”); horz_header.append(“T7”); horz_header.append(“T8”); horz_header.append(“T9”); ui->tableWidget->setHorizontalHeaderLabels(horz_header); QStringList vert_header; vert_header.clear(); vert_header.append("P1"); vert_header.append("P2"); vert_header.append("P3"); vert_header.append("P4"); ui->tableWidget->setVerticalHeaderLabels(vert_header); ui->tableWidget->horizontalHeader()->setVisible(true); ui->tableWidget->verticalHeader()->setVisible(true); ui->tableWidget-setVerticalScrollMode(QAbstractItemView::ScrollPerItem); ui->tableWidget->setAutoScroll(false); ui->tableWidget->setItem(0,0,Display_item_0_0); ui->tableWidget->setItem(0,1,Display_item_0_1); ui->tableWidget->setItem(0,2,Display_item_0_2); ui->tableWidget->setItem(0,3,Display_item_0_3); ui->tableWidget->setItem(0,4,Display_item_0_4); ui->tableWidget->setItem(0,5,Display_item_0_5); ui->tableWidget->setItem(0,6,Display_item_0_6); ui->tableWidget->setItem(0,7,Display_item_0_7); ui->tableWidget->setItem(0,8,Display_item_0_8); ui->tableWidget->setItem(1,0,Display_item_1_0); ui->tableWidget->setItem(1,1,Display_item_1_1); ui->tableWidget->setItem(1,2,Display_item_1_2); ui->tableWidget->setItem(1,3,Display_item_1_3); ui->tableWidget->setItem(1,4,Display_item_1_4); ui->tableWidget->setItem(1,5,Display_item_1_5); ui->tableWidget->setItem(1,6,Display_item_1_6); ui->tableWidget->setItem(1,7,Display_item_1_7); ui->tableWidget->setItem(1,8,Display_item_1_8);.........
.........
..........ui->tableWidget->setItem(513,0,FDP_Display_item_513_0);
ui->tableWidget->setItem(513,1,FDP_Display_item_513_1);
ui->tableWidget->setItem(513,2,FDP_Display_item_513_2);
ui->tableWidget->setItem(513,3,FDP_Display_item_513_3);
ui->tableWidget->setItem(513,4,FDP_Display_item_513_4);
ui->tableWidget->setItem(513,5,FDP_Display_item_513_5);
ui->tableWidget->setItem(513,6,FDP_Display_item_513_6);
ui->tableWidget->setItem(513,7,FDP_Display_item_513_7);
ui->tableWidget->setItem(513,8,FDP_Display_item_513_8);ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectItems);
ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
ui->tableWidget->setShowGrid(true);
ui->tableWidget->horizontalHeader()->setSectionsMovable(true);
ui->tableWidget->horizontalHeader()->setSectionsClickable(true);
ui->tableWidget->horizontalHeader()->etSectionResizeMode(QHeaderView::Fixed);}
Key_Up_Routine {
int scroll;
qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value()); scroll = ui->tableWidget->verticalScrollBar()->value(); if(scroll >= 10) { ui->tableWidget->verticalScrollBar()->setValue((scroll - 10)); } qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
Key_Down_Routine {
int scroll;qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value());scroll = ui->tableWidget->verticalScrollBar()->value();
ui->tableWidget->verticalScrollBar()->setValue((scroll + 10));
qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
@Sajeevan-K said in Vertical ScrollBar of QTableWidget not moving as expected:
QTableWidgetItem * Display_item_0_0 = new QTableWidgetItem("0");
QTableWidgetItem * Display_item_0_1 = new QTableWidgetItem("1");
QTableWidgetItem * Display_item_0_2 = new QTableWidgetItem("2");
QTableWidgetItem * Display_item_0_3 = new QTableWidgetItem("3");
QTableWidgetItem * Display_item_0_4 = new QTableWidgetItem("4");
QTableWidgetItem * Display_item_0_5 = new QTableWidgetItem("5");
QTableWidgetItem * Display_item_0_6 = new QTableWidgetItem("6");
QTableWidgetItem * Display_item_0_7 = new QTableWidgetItem("7");
QTableWidgetItem * Display_item_0_8 = new QTableWidgetItem("8");
QTableWidgetItem * Display_item_1_0 = new QTableWidgetItem("0");
QTableWidgetItem * Display_item_1_1 = new QTableWidgetItem("1");
QTableWidgetItem * Display_item_1_2 = new QTableWidgetItem("2");
QTableWidgetItem * Display_item_1_3 = new QTableWidgetItem("3");
QTableWidgetItem * Display_item_1_4 = new QTableWidgetItem("4");
QTableWidgetItem * Display_item_1_5 = new QTableWidgetItem("5");
QTableWidgetItem * Display_item_1_6 = new QTableWidgetItem("6");
QTableWidgetItem * Display_item_1_7 = new QTableWidgetItem("7");
QTableWidgetItem * Display_item_1_8 = new QtableWidgetItem("8");Why don't you use loops?
-
Hi jsulm,
I tried using loop for this. But my knowledge in qt is limited.
I don't know how to make the names like Display_item_0_0 in a loop.
If it is a string it is easy. I think something like unstring operation is required for this.The code I sent, does not contain all the declarations of Display items and assigning it to QTableWidget. Otherwise it contains all the things that I am testing.
Today by evening, I will make a Table with just 25 rows and see the result.
Thank You for supporting. -
Hi jsulm,
I tried using loop for this. But my knowledge in qt is limited.
I don't know how to make the names like Display_item_0_0 in a loop.
If it is a string it is easy. I think something like unstring operation is required for this.The code I sent, does not contain all the declarations of Display items and assigning it to QTableWidget. Otherwise it contains all the things that I am testing.
Today by evening, I will make a Table with just 25 rows and see the result.
Thank You for supporting.@Sajeevan-K said in Vertical ScrollBar of QTableWidget not moving as expected:
I don't know how to make the names like Display_item_0_0 in a loop
Do you really need names for all of them? What do you do with all these names later?
-
Hi jsulm,
I tried using loop for this. But my knowledge in qt is limited.
I don't know how to make the names like Display_item_0_0 in a loop.
If it is a string it is easy. I think something like unstring operation is required for this.The code I sent, does not contain all the declarations of Display items and assigning it to QTableWidget. Otherwise it contains all the things that I am testing.
Today by evening, I will make a Table with just 25 rows and see the result.
Thank You for supporting.@Sajeevan-K said in Vertical ScrollBar of QTableWidget not moving as expected:
I don't know how to make the names like Display_item_0_0 in a loop.
-
Hi jsulm,
Thank You. I got Your point.
And the code is rewritten as shown below:
But the result is same. Still the maximum is 2 only.
form_Table {
ui->tableWidget->setGeometry(-2,40,804,15424); ui->tableWidget->horizontalHeader()->setDefaultSectionSize(80); ui->tableWidget->verticalHeader()->setDefaultSectionSize(30); ui->tableWidget->setRowCount(514); ui->tableWidget->setColumnCount(9); ui->tableWidget->setColumnWidth(0,80); ui->tableWidget->setColumnWidth(1,80); ui->tableWidget->setColumnWidth(2,80); ui->tableWidget->setColumnWidth(3,80); ui->tableWidget->setColumnWidth(4,80); ui->tableWidget->setColumnWidth(5,80); ui->tableWidget->setColumnWidth(6,80); ui->tableWidget->setColumnWidth(7,80); ui->tableWidget->setColumnWidth(8,80); QStringList horz_header; horz_header.clear(); horz_header.append(“T1”); horz_header.append(“T2”); horz_header.append(“T3”); horz_header.append(“T4”); horz_header.append(“T5”); horz_header.append(“T6”); horz_header.append(“T7”); horz_header.append(“T8”); horz_header.append(“T9”); ui->tableWidget->setHorizontalHeaderLabels(horz_header); QStringList vert_header; vert_header.clear(); vert_header.append("P1"); vert_header.append("P2"); vert_header.append("P3"); vert_header.append("P4"); ui->tableWidget->setVerticalHeaderLabels(vert_header); ui->tableWidget->horizontalHeader()->setVisible(true); ui->tableWidget->verticalHeader()->setVisible(true); ui->tableWidget-setVerticalScrollMode(QAbstractItemView::ScrollPerItem); ui->tableWidget->setAutoScroll(false);QStringList str_list;
str_list.clear();
str_list.append("0");
str_list.append("1");
str_list.append("2");
str_list.append("3");
str_list.append("4");
str_list.append("5");
str_list.append("6");
str_list.append("7");
str_list.append("8");
int row, column;
for (row = 0; row < 514; row++) {
for (column = 0; column < 9; column++) {
QTableWidgetItem * Display_item = new QTableWidgetItem(str_list.at(column));
ui->tableWidget_FDP->setItem(row,column, Display_item );
}
}ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectItems);
ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
ui->tableWidget->setShowGrid(true);
ui->tableWidget->horizontalHeader()->setSectionsMovable(true);
ui->tableWidget->horizontalHeader()->setSectionsClickable(true);
ui->tableWidget->horizontalHeader()->etSectionResizeMode(QHeaderView::Fixed);}
Key_Up_Routine {
int scroll;
qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value()); scroll = ui->tableWidget->verticalScrollBar()->value(); if(scroll >= 10) { ui->tableWidget->verticalScrollBar()->setValue((scroll - 10)); } qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
Key_Down_Routine {
int scroll;qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value());scroll = ui->tableWidget->verticalScrollBar()->value();
ui->tableWidget->verticalScrollBar()->setValue((scroll + 10));
qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
-
Hi jsulm,
Thank You. I got Your point.
And the code is rewritten as shown below:
But the result is same. Still the maximum is 2 only.
form_Table {
ui->tableWidget->setGeometry(-2,40,804,15424); ui->tableWidget->horizontalHeader()->setDefaultSectionSize(80); ui->tableWidget->verticalHeader()->setDefaultSectionSize(30); ui->tableWidget->setRowCount(514); ui->tableWidget->setColumnCount(9); ui->tableWidget->setColumnWidth(0,80); ui->tableWidget->setColumnWidth(1,80); ui->tableWidget->setColumnWidth(2,80); ui->tableWidget->setColumnWidth(3,80); ui->tableWidget->setColumnWidth(4,80); ui->tableWidget->setColumnWidth(5,80); ui->tableWidget->setColumnWidth(6,80); ui->tableWidget->setColumnWidth(7,80); ui->tableWidget->setColumnWidth(8,80); QStringList horz_header; horz_header.clear(); horz_header.append(“T1”); horz_header.append(“T2”); horz_header.append(“T3”); horz_header.append(“T4”); horz_header.append(“T5”); horz_header.append(“T6”); horz_header.append(“T7”); horz_header.append(“T8”); horz_header.append(“T9”); ui->tableWidget->setHorizontalHeaderLabels(horz_header); QStringList vert_header; vert_header.clear(); vert_header.append("P1"); vert_header.append("P2"); vert_header.append("P3"); vert_header.append("P4"); ui->tableWidget->setVerticalHeaderLabels(vert_header); ui->tableWidget->horizontalHeader()->setVisible(true); ui->tableWidget->verticalHeader()->setVisible(true); ui->tableWidget-setVerticalScrollMode(QAbstractItemView::ScrollPerItem); ui->tableWidget->setAutoScroll(false);QStringList str_list;
str_list.clear();
str_list.append("0");
str_list.append("1");
str_list.append("2");
str_list.append("3");
str_list.append("4");
str_list.append("5");
str_list.append("6");
str_list.append("7");
str_list.append("8");
int row, column;
for (row = 0; row < 514; row++) {
for (column = 0; column < 9; column++) {
QTableWidgetItem * Display_item = new QTableWidgetItem(str_list.at(column));
ui->tableWidget_FDP->setItem(row,column, Display_item );
}
}ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectItems);
ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);
ui->tableWidget->setShowGrid(true);
ui->tableWidget->horizontalHeader()->setSectionsMovable(true);
ui->tableWidget->horizontalHeader()->setSectionsClickable(true);
ui->tableWidget->horizontalHeader()->etSectionResizeMode(QHeaderView::Fixed);}
Key_Up_Routine {
int scroll;
qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value()); scroll = ui->tableWidget->verticalScrollBar()->value(); if(scroll >= 10) { ui->tableWidget->verticalScrollBar()->setValue((scroll - 10)); } qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
Key_Down_Routine {
int scroll;qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value());scroll = ui->tableWidget->verticalScrollBar()->value();
ui->tableWidget->verticalScrollBar()->setValue((scroll + 10));
qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
@Sajeevan-K You still can simplify your code with loops :-)
-
Hi jsulm,
Thank You for Your suggestions. Today I am busy with my work. Tomorrow I will test it and give a feedback.
-
Hi jsulm,
Sorry for the delay. I have been busy with a customer inspection.
As per Your suggestion, I reduced it further as shown below.
Now the maximum() is reduced to 1.
form_Table {
int row, column;
ui->tableWidget->setGeometry(-2,40,804,15424); ui->tableWidget->horizontalHeader()->setDefaultSectionSize(80); ui->tableWidget->verticalHeader()->setDefaultSectionSize(30); ui->label_FDP_Display->setGeometry(-2,0,804,40); ui->tableWidget->setRowCount(514); ui->tableWidget->setColumnCount(9); for (column = 0; column < 9; column++) { ui->tableWidget->setColumnWidth(column,80); }QStringList horz_header;
horz_header.clear();QString hh_str; for (column = 0; column < 9; column++) { hh_str.clear(); hh_str.append("T"); hh_str.append(QString::number(column)); horz_header.append(hh_str); }ui->tableWidget->setHorizontalHeaderLabels(horz_header);
QStringList vert_header; vert_header.clear(); QString vh_str; for (row = 0; row < 514; row++) { vh_str.clear(); vh_str.append("P"); vh_str.append(QString::number(row)); vert_header.append(vh_str); }ui->tableWidget->setVerticalHeaderLabels(vert_header);
ui->tableWidget->horizontalHeader()->setVisible(true);
ui->tableWidget->verticalHeader()->setVisible(true);
ui->tableWidget->setVerticalScrollMode(QAbstractItemView::ScrollPerItem);
ui->tableWidget->setAutoScroll(false);QString item_str; for (row = 0; row < 514; row++) { for (column = 0; column < 9; column++) { item_str.clear(); item_str.append(QString::number(row)); item_str.append(","); item_str.append(QString::number(column)); QTableWidgetItem * FDP_Display_item = new QTableWidgetItem(item_str); ui->tableWidget->setItem(row,column, FDP_Display_item ); } }ui->tableWidget->setSelectionBehavior(QAbstractItemView::SelectItems);
ui->tableWidget->setSelectionMode(QAbstractItemView::SingleSelection);ui->tableWidget->setShowGrid(true);
ui->tableWidget->horizontalHeader()->setSectionsMovable(true);
ui->tableWidget->horizontalHeader()->setSectionsClickable(true);
ui->tableWidget->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);}
Key_Up_Routine {
int scroll;
qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value()); scroll = ui->tableWidget->verticalScrollBar()->value(); if(scroll >= 10) { ui->tableWidget->verticalScrollBar()->setValue((scroll - 10)); } qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
Key_Down_Routine {
int scroll;qDebug("current value = %d ", ui->tableWidget->verticalScrollBar()->value());scroll = ui->tableWidget->verticalScrollBar()->value();
ui->tableWidget->verticalScrollBar()->setValue((scroll + 10));
qDebug("new value = %d ", ui->tableWidget->verticalScrollBar()->value());}
-
Hi jsulm,
I could finally solve the issue. The problem was in the line
ui->tableWidget->setGeometry(-2,40,804,15424);
Generally for ui->tableWidget->setGeometry(x,y,width,hight),
hight should be equal to number of rows in one page * default vertical section size.
Thank You for the hints SGaist, jsulm
