Start program center screen on main monitor

[glararan]

Hi, i have in computer two monitors... and when i use this code:

@map_selection_menu->move(QApplication::desktop()->availableGeometry(0).width() + 1, map_selection_menu->y());@

It start between two monitors... and i need to start it in center or main monitor...better will be when program detect all monitors and after calculate to main...

I have for screens connected:
@if (QApplication::desktop()->screenCount() > 1)
{
QRect geom = QApplication::desktop()->screenGeometry(0);
}@

But now i dont know what with "if" ... how i can continue?

[KA51O]

have you tried this:
@
map_selection_menu->move(0,0);
@

This should move your widget to the center of the primary screen.

[glararan]

@map_selection_menu->move(0,0);@

move to left top on main screen

[Guest]

then get your resolution and place your widget at width/2, height/2

[KA51O]

have you tried it? I did it with move(0,0) and it was in center of the screen. See "this code":http://developer.qt.nokia.com/forums/viewthread/10075/.

Is your widget the main window or a child widget? Because child widgets are always at center of parent widget per default. And I think main window is at center of primary screen per default.

Does QWidget::move(int x, int y) move to position x,y or does it move to a position that is x further left or right and y further up or down ? The later would explain why move(0,0) put my splashscreen to center (because it was allready at center and was moved 0 further right and 0 further up).

[glararan]

It isnt main window just QWidget.And i say move( 0, 0 ) dont help

[KA51O]

Does your widget have a parent ?

[glararan]

Nope

[KA51O]

try
@
QSize screenSize = QApplication::desktop()->geometry().size();
int primaryScreenWidth = screenSize.width();
int primaryScreeHeight= screenSize.height();
int widgetWidth = yourWidget.width();
int widgetHeight= yourWidget.height();
yourWidget->move(primaryScreenWidth/2 - widgetWidth/2, primaryScreeHeight/2 - widgetHeight/2)
@

[glararan]

I cant call
@QSize screenSize = QApplication::desktop()->geometry().size();@

:(
No suitable convert from QDesktopWidget* to QSize

[andre]

This is not the method you are after. Read the section Screen Geometry in the [[doc:QDesktopWidget]] documentation.