[SOLVED]Sytem-wide Hotkey Shortcut(Windows) : Works but locks window?

weblife

I am trying to figure a way I can use a system wide hotkey in my application. I have provided working code below but my issue is because it's in a while() loop. This is causing the windows to lock up and become disabled, however functions still get processed depending on the wParam I set for each hotkey.

I will continue to find a way to do this without the loop but figured I could appeal to the community being there is a request for a data type to do this "QDesktopShortcut.":https://bugreports.qt-project.org/browse/QTBUG-5183

@
#define MOD_NOREPEAT 0x4000
#define MOD_ALT 0x0001

#include "mainwindow.h"
#include <QApplication>
#include "stdafx.h"
#include <QDebug>

int main(int argc, char *argv[])
{
RegisterHotKey(NULL,1,MOD_ALT | MOD_NOREPEAT,0x42);
RegisterHotKey(NULL,2,MOD_ALT | MOD_NOREPEAT,0x44);
MSG msg;
QApplication a(argc, argv);
MainWindow w;
w.show();
while(GetMessage(&msg,NULL,0,0)){
if (msg.message == WM_HOTKEY){
if (msg.wParam == 1)qDebug() << "Hot Key activated : ALT + B";
if (msg.wParam == 2) qDebug() << "Hot Key activated : ALT + D";
}
}
return a.exec();
}
@

SGaist

Hi,

You might be interested by "this":http://libqxt.bitbucket.org/doc/0.6/qxtglobalshortcut.html

weblife

Solved! Thank you to "terenty":http://qt-project.org/forums/viewthread/27762
@
#define MOD_NOREPEAT 0x4000
#define MOD_ALT 0x0001

#include "stdafx.h"
#include <QDebug>
#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
RegisterHotKey(NULL,1,MOD_ALT | MOD_NOREPEAT,0x42);
RegisterHotKey(NULL,2,MOD_ALT | MOD_NOREPEAT,0x44);

QApplication a(argc, argv);
MainWindow w;
w.show();

QApplication::processEvents();

MSG msg;
while(GetMessage(&msg,NULL,0,0)){
    TranslateMessage(&msg);
    DispatchMessage(&msg);
    if (msg.message == WM_HOTKEY){
        if (msg.wParam == 1) qDebug() << "Hot Key activated : ALT + B";
        if (msg.wParam == 2) qDebug() << "Hot Key activated : ALT + D";
    }
}
return msg.wParam;

}
@

weblife

[quote author="SGaist" date="1385152664"]Hi,

You might be interested by "this":http://libqxt.bitbucket.org/doc/0.6/qxtglobalshortcut.html[/quote]

I tried compiling the latest branch for windows but isn't stable. Stable releases don't work with Qt 5.1. It would be a nicer option. I currently am having a exit error with my method. Pretty sure I need to find a way to exit the while loop on exit.

SGaist

You should then try to ask on the libQxt user mailing list about their state regarding Qt 5