Question

I have a project which was created for MinGW + Qt via cmake.
In CMakeLists.txt I have

add_executable (project-name WIN32 ${MOC_SRCS} ${HEADERS} ${SOURCES} ${RESOURCES} ${QtApp_RCC_SRCS})

If I try to compile it into VisualStudio 2010 I get the following linker error:

MSVCRTD.lib(crtexew.obj) : error LNK2019: undefined reference _WinMain@16 in func ___tmainCRTStartup

Then I erase WIN32

add_executable (project-name ${MOC_SRCS} ${HEADERS} ${SOURCES} ${RESOURCES} ${QtApp_RCC_SRCS})

The project compiles and works fine, but I have an a console window with a Qt window. How to disable the console?

Answer 1

Using WIN32 within add_executable means your application will be of the type SUBSYSTEM:WINDOWS. That is, an application which does not require a console. If this is specified then, rather than a main(...), a WinMain(...) (which has different arguments from a main) is expected. Since your code most likely does not have this, you get the linker error you report.

Removing WIN32 means your executable will be of the default type SUBSYSTEM:CONSOLE, which explains why your application works, but a console is shown.

So to fix it, do specify WIN32 but change your main() to a WinMain().