Qt 4.8 QSlider handle size
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No worries, I found Qt 4..8.4 and installed it with MinGW gcc 4.4.0.
Then I created a directory C:\Main with just a file main.pro containing this line:SOURCES += main.cppthen created a main.cpp with a copy of my code from my post above (about 2 hours ago). Then i typed:
C:\Qt\4.8.4\bin\qtvars.bat
and got this:Setting up a MinGW/Qt only environment... -- QTDIR set to C:\Qt\4.8.4 -- PATH set to C:\Qt\4.8.4\bin -- Adding C:\MinGW\bin to PATH -- Adding C:\Windows\System32 to PATH -- QMAKESPEC set to win32-g++```then i typed
qmake
make
and gpt this:mingw32-make -f Makefile.Debug mingw32-make[1]: Entering directory `C:/Main' C:\Qt\4.8.4\bin\moc.exe -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_GUI_LIB - DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_H AVE_SSE2 -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\Qt\4.8.4\include\QtCore" -I" ..\Qt\4.8.4\include\QtGui" -I"..\Qt\4.8.4\include" -I"..\Qt\4.8.4\include\Active Qt" -I"debug" -I"..\Qt\4.8.4\mkspecs\win32-g++" -D__GNUC__ -DWIN32 main.cpp -o d ebug\main.moc g++ -c -pipe -g -frtti -fexceptions -mthreads -Wall -Wextra -DUNICODE -DQT_LARGE FILE_SUPPORT -DQT_DLL -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW - DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAI N -I"..\Qt\4.8.4\include\QtCore" -I"..\Qt\4.8.4\include\QtGui" -I"..\Qt\4.8.4\in clude" -I"..\Qt\4.8.4\include\ActiveQt" -I"debug" -I"..\Qt\4.8.4\mkspecs\win32-g ++" -o debug\main.o main.cpp g++ -mthreads -Wl,-subsystem,windows -o debug\Main.exe debug/main.o -L"c:\Qt\4. 8.4\lib" -lmingw32 -lqtmaind -lQtGuid4 -lQtCored4 mingw32-make[1]: Leaving directory `C:/Mainthen when i type
C:\Main\debug\main.exe
my app looks the same as the screenshot above (i.e. with just two sliders visibile), so 4.8.4 looks the same 4.8.7 (for this project anyway).Perhaps you are using a different compiler than MinGW gcc 4.4.0?
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@hskoglund , I thought I would take another look and I was wrong, looking at Qt Build & Run the compilers are:
Auto-detected g++ (gnat-2014-4-x86) gcc (x86 64bit in /usr/bin) gcc (x86 32bit in /usr/bin)I then cleaned and rebuilt and can see in the Compiler Output it is using g++. I then opened a terminal and typed: g++ --version:
g++ (Gentoo 4.6.3 p1.13, pie-0.5.2) 4.6.3So it looks like it is the same version after all.
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Hi I googled that Gentoo release and it seems that there's no online installation of Qt 4.8.4 available for it, so I think your version of Qt 4.8.4 is custom built, i.e. built by downloading the source for Qt 4.8.4 and compiling. And in that process some features might have been dropped, for example z-order for widgets.
So I simplified my example to not to rely on a working z-order, please try this version:#include <QApplication> #include <qslider.h> class Window : public QWidget { Q_OBJECT // setup 2 real sliders and 2 "followers" that are stacked under the real ones QSlider* pSlider1; QSlider* pSlider1Follower; QSlider* pSlider2; QSlider* pSlider2Follower; public: Window() { setGeometry(130,130,860,660); pSlider1Follower = new QSlider(Qt::Horizontal,this); pSlider1Follower->setTickPosition(QSlider::TicksBothSides); pSlider1Follower->setTickInterval(2); pSlider2Follower = new QSlider(Qt::Vertical,this); pSlider2Follower->setTickPosition(QSlider::TicksBothSides); pSlider2Follower->setTickInterval(2); pSlider1 = new QSlider(Qt::Horizontal,this); pSlider2 = new QSlider(Qt::Vertical,this); connect(pSlider1,SIGNAL(valueChanged(int)),this,SLOT(valueChanged1(int))); connect(pSlider2,SIGNAL(valueChanged(int)),this,SLOT(valueChanged2(int))); // do an initial update/refresh valueChanged1(0); valueChanged2(0); } public slots: void valueChanged1(int value) { pSlider1Follower->setValue(value); pSlider2->setStyleSheet(QString("QSlider::groove { background: transparent; width: %1px; } " "QSlider::handle { background: #eeeeee; border:1px solid grey; height: %2px;}").arg(value + 30).arg(value * 2 + 10)); pSlider2->setGeometry(660,30,2 * value + 30,600); pSlider2Follower->setGeometry(660,30,2 * value + 30,600); } void valueChanged2(int value) { pSlider2Follower->setValue(value); pSlider1->setStyleSheet(QString("QSlider::groove { background: transparent; height: %1px; } " "QSlider::handle { background: #eeeeee; border:1px solid grey; width: %2px;}").arg(value + 30).arg(value * 2 + 10)); pSlider1->setGeometry(30,300,600,2 * value + 30); pSlider1Follower->setGeometry(30,300,600,2 * value + 30); } }; int main(int argc, char *argv[]) { QApplication app(argc, argv); Window window; window.show(); return app.exec(); } #include "main.moc"If it bulds ok, lets' debug:
- How many sliders do you see?
- If you move one of them, does it cause any other slider to move as well?
- If you move one of them, does it cause any other slider to change in size?
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- 2 Sliders, 1 horizontal and 1 vertical, with two handles on each, the horizontal slider handles do not look correct.
2 . Moving the vertical slider causes both vertical handles to move together, the coloured square handle is correct orientation, this also increases height of horizontal slider.
Moving the horizontal slider increases the width of the vertical slider, but the handles are not together, one is the correct orientation but centered.
- Vertical handles are in sync. Horizontal are not.
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