My apologies but the answer was a simple one:
LIBS += -L"C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Lib" -ladvapi32
-luser32
I completely forgot to link the user32.lib.
-Jason
From: Jason Kretzer
Sent: Monday, September 14, 2015 11:59 AM
To: interest@qt-project.org
Subject: Qt5.5, VS2013 chain, compile warnings and linking errors
I have been searching for an answer to this but no luck as yet.
Using Qt5.5 32bit, VS2013 on Win8 64bit
My .pro file contains this:
INCLUDEPATH += "C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include"
LIBS += -L"C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Lib" -ladvapi32
I have checked both folders and WinUser.h is in the Include and User32.lib is
present in the Lib.
I have the following two functions in my code:
void suppressAnimations()
{
ANIMATIONINFO m_original_settings;
m_original_settings.cbSize = sizeof(m_original_settings);
if (::SystemParametersInfo(SPI_GETANIMATION, sizeof(m_original_settings),
&m_original_settings, 0)) {
ANIMATIONINFO no_animation = { sizeof(no_animation), 0 };
::SystemParametersInfo(SPI_SETANIMATION, sizeof(no_animation),
&no_animation, SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);
}
}
AND
int BackgroundTaskManager::changeMonitorState(bool turnOn)
{
int lparam = 2;
if(turnOn) {
lparam = -1;
BackgroundTaskManager::MonitorIsSleeping = false;
} else {
lparam = 2;
BackgroundTaskManager::MonitorIsSleeping = true;
}
return SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER,
(LPARAM)lparam);
}
I use this exact same code with Qt 5.3.2 32bit VS2010 on Windows 7 64bit and it
compiles with no problems. In my current configuration, I get linking errors
on the ::SystemParametersInfo and the SendMessage parts of the functions and a
bunch of warnings on the headers.
Warnings
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include\sal_supp.h:57:
warning: C4005: '__useHeader' : macro redefinition
Linking Errors
main.obj:-1: error: LNK2019: unresolved external symbol
__imp__SystemParametersInfoW@16 referenced in function "void __cdecl
suppressAnimations(void)" (?suppressAnimations@@YAXXZ)
backgroundtaskmanager.obj:-1: error: LNK2019: unresolved external symbol
__imp__SendMessageW@16 referenced in function "private: int __thiscall
BackgroundTaskManager::changeMonitorState(bool)"
(?changeMonitorState@BackgroundTaskManager@@AAEH_N@Z)
Another bit of information, I tried this also using Qt5.5 32bit VS2013 on Win7
64bit and also received the errors as above. Yet another bit of information,
in Qt Creator, I can press F2 over either of the symbols above and it takes me
to the correct header.
Could someone point me in the correct direction?
-Jason
//------------------------------//
Jason R. Kretzer
Lead Application Developer
ja...@gocodigo.com<mailto:ja...@gocodigo.com>
//------------------------------//
³quidquid latine dictum sit altum videtur"
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