WinAPI链接C ++

Question

Win7 64bit Qt5.4.1 -> MinGW 4.9.1 32bit

Below is a simple Qt app that generates unique GUID:

guid.pro

QT       += core
QT       -= gui

TARGET = qt-msync
CONFIG   += console
CONFIG   -= app_bundle

#INCLUDEPATH += "C:/Program Files/Microsoft SDKs/Windows/v7.1/Include"
LIBS += "C:/Program Files/Microsoft SDKs/Windows/v7.1/Lib/Rpcrt4.lib"

TEMPLATE = app
SOURCES += main.cpp

main.cpp

#include <QCoreApplication>
#include <Rpc.h>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    GUID myGuid;
    CoCreateGuid(&myGuid);

    return a.exec();
}

If the qmake contains INCLUDEPATH += "C:/Program Files/Microsoft SDKs/Windows/v7.1/Include" I am struck with 72 errors all of which look like errors related to double underscore macros.

As it stands \\main.cpp:9: error: undefined reference to `_imp__CoCreateGuid@4' Obviously a linker error but library file is present LIBS += "C:/Program Files/Microsoft SDKs/Windows/v7.1/Lib/Rpcrt4.lib"

Anyone else managed to get Rpc.h to cooperate compiling a 32 target on 64 Machine ?

I have also tried simpler CMake C++ only code compiling with MSVC (the one included in the Windows SDK) and it throws the same error.

Answer 1

#INCLUDEPATH += "C:/Program Files/Microsoft SDKs/Windows/v7.1/Include"
#LIBS += "C:/Program Files/Microsoft SDKs/Windows/v7.1/Lib/Rpcrt4.lib"

win32
{
    LIBS += -lole32
}

I was able to build exactly your code using only ole32.lib.