PRINTING A DISPLAYED TABLE FROM DATABASE

mrjj

Hi
The code prints the actual widget so it cannot be used if many items as then not all are printed.
You can use the way Gojir4 shows using a QTextDocument or using html as i did here
https://forum.qt.io/topic/52652/solved-pdf-print-in-multiple-pages/21

In any case you have to control the printing yourself and if you have many items so that cannot be on one page then you also need to handle new pages etc.

Pablo J. Rogina

@GREYON said in PRINTING A DISPLAYED TABLE FROM DATABASE:

Now want to be able to print these tables

You may want to take a look at QtRPT report generator. Spoiler alert: I haven't used it myself.

GREYON

@mrjj thanks let me try it

GREYON

@Pablo-J-Rogina okey thanks,I will try it dear

Pl45m4

@GREYON

Just to add:

PUPILS_PAID_SCH_FEE_BY_GRADE is a horrible name for any c++ class. Name your widgets after what they are, not what content they display, since the content could change. In addition it's way too long, as you can see from how your cpp file looks like :)

PupilFeeDialog for example, would be much shorter and easier to handle.

GREYON

@Pl45m4 thanks noted

GREYON

@Pablo-J-Rogina
So where and how is the function PrintTable() declared?

GREYON

@mrjj how and where is function PrintTable declared in your example?

mrjj

@GREYON

Its there. :)
just scroll the code. there are more than shown first.

alt text

GREYON

@mrjj
I can just see the function call,or maybe it's in the.h file?

mrjj

@GREYON

Im not sure what you see ?
it should all be there. just need to scroll more :)

void PrintTable( QPrinter* printer, QSqlQuery& Query )
is in any case.

bool createConnection() {
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(":memory:");
if (!db.open()) {
QMessageBox::critical(0, qApp->tr("Cannot open database"), "Click Cancel to exit.", QMessageBox::Cancel);
return false;
}
QSqlQuery query;
qDebug() << "table:" << query.exec("create table person (id int primary key, "
"firstname varchar(20), lastname varchar(20), num int )");
query.exec("insert into person values(101, 'Dennis', 'Young','1')");
query.exec("insert into person values(102, 'Christine', 'Holand','2')");
query.exec("insert into person values(103, 'Lars junior', 'Gordon','4')");
query.exec("insert into person values(104, 'Roberto', 'Robitaille','5')");
query.exec("insert into person values(105, 'Maria', 'Papadopoulos','3')");
return true;
}

// credits to. (i adabted from his) https://stackoverflow.com/questions/3147030/qtableview-printing/4079676#4079676

void PrintTable( QPrinter* printer, QSqlQuery& Query ) {
QString strStream;
QTextStream out(&strStream);

const int rowCount = Query.size();
const int columnCount = Query.record().count();

out << "<html>\n"
"<head>\n"
"<meta Content="Text/html; charset=Windows-1251">\n"
<< QString("<title>%1</title>\n").arg("TITLE OF TABLE")
<< "</head>\n"
"<body bgcolor=#ffffff link=#5000A0>\n"
"<table border=1 cellspacing=0 cellpadding=2>\n";

// headers
out << "<thead><tr bgcolor=#f0f0f0>";
for (int column = 0; column < columnCount; column++)
out << QString("<th>%1</th>").arg(Query.record().fieldName(column));
out << "</tr></thead>\n";

while (Query.next()) {
out << "<tr>";
for (int column = 0; column < columnCount; column++) {
QString data = Query.value(column).toString();
out << QString("<td bkcolor=0>%1</td>").arg((!data.isEmpty()) ? data : QString(" "));
}
out << "</tr>\n";
}

out << "</table>\n"
"</body>\n"
"</html>\n";

QTextDocument document;
document.setHtml(strStream);
document.print(printer);

}

void print() {
QPrinter printer(QPrinter::HighResolution);
printer.setOrientation(QPrinter::Portrait);
printer.setPageSize(QPrinter::A4);
printer.setOutputFormat(QPrinter::PdfFormat);
// printer.setOutputFileName("e:/file.pdf"); // just for me testing
QPrintDialog dlg(&printer, 0);
if(dlg.exec() == QDialog::Accepted) {
QSqlQuery query;
query.exec("SELECT * from person");
PrintTable(&printer, query);
}
}

GREYON

@mrjj
I can just see the function definition,or maybe it's in the.h file?

mrjj

@GREYON

The function is there. there is no .h file.
but full function is.

GREYON

okey I have seen it now!,let me try to use it

mrjj

@GREYON
Ok good :)