[Qt-interest] qt how to use multi-screen

[tang ke]

于 2011年07月22日 05:48, Paul Miller 写道:
> On 7/21/2011 3:10 AM, tang ke wrote:
>> yes,I want to use multiple monitor in my program.
>>
>> the next is my test code:
> ...
>> the loop execute twice.
>> but I get the same pointer of app.desktop().screen(i)
> Depending on your platform there may only be one widget which spans both
> screens.
>
> Instead, use the screen geometry or available geometry, and then set
> your widget geometry for each widget to go to the appropriate area.
thanks, I fixed it with next code:

#include <QApplication>
#include <QDesktopWidget>
#include <QPushButton>
#include <QDebug>
int main(int argc, char **argv) {
QApplication app(argc, argv);
QWidget p;
const int screen = app.desktop()->screenCount();
qDebug() << screen;
const QRect availableRect1(QApplication::desktop()->availableGeometry(0));
const QRect availableRect2(QApplication::desktop()->availableGeometry(1));
qDebug() << availableRect1;
qDebug() << availableRect2;
p.move(availableRect1.left(),availableRect1.top());
p.showFullScreen();
return app.exec();
}

but I don't know which screen is the primary screen. maybe It's setted
by system monitor settings.

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-- 
Best Regards


Tang Ke (Application develop of software department)
Tel：0086-512-52308628 Fax：0086-512-52308688
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