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POUSe function from user32.dll in Qt4 application
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  1. POUSe function from user32.dll in Qt4 application
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    copied!<p>i am unable to use the function MonitorFromPoint in my Qt application. I have the latest Qt SDL 2010.05 with mingw on Windows XP</p> <pre><code>#include &lt;QtCore/QCoreApplication&gt; #include&lt;windows.h&gt; #include &lt;winuser.h&gt; int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); POINT pt; MonitorFromPoint(pt,2); return a.exec(); } </code></pre> <p>I added this to the .pro file</p> <pre><code>LIBS+= -luser32 </code></pre> <p>And the result is</p> <pre><code>g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_CORE_LIB -DQT_THREAD_SUPPORT -I"..\include\QtCore" -I"..\include" -I"..\include\ActiveQt" -I"tmp\moc\debug_shared" -I"..\testUser32" -I"." -I"..\mkspecs\win32-g++" -o tmp\obj\debug_shared\main.o ..\testUser32\main.cpp mingw32-make[1]: Leaving directory `C:/Qt/2010.05/qt/testUser32-build-desktop' mingw32-make: Leaving directory `C:/Qt/2010.05/qt/testUser32-build-desktop' ..\testUser32\main.cpp: In function 'int main(int, char**)': ..\testUser32\main.cpp:8: error: 'MonitorFromPoint' was not declared in this scope mingw32-make[1]: *** [tmp/obj/debug_shared/main.o] Error 1 mingw32-make: *** [debug-all] Error 2 The process "C:/Qt/2010.05/mingw/bin/mingw32-make.exe" exited with code %2. Error while building project testUser32 (target: Desktop) When executing build step 'Make' </code></pre> <p>Someone on the IRc said that is a mingw prolem and i should use visualc compiler. Switching the compiler will take time and maybe i will findother problems. I imported functions from wingdi.h and i had no problems. I need a better explanation about the problem, how you figure it out and the solution</p> <p>P.S. I am trying to get the screen geometryes in a multi monitor system, QDesktopWidget does not work ,see the topic <a href="https://stackoverflow.com/questions/3966429/capture-multiple-screens-desktop-image-using-qt4">Capture multiple screens desktop image using Qt4</a> </p>
 

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