在 CMAKE 和 Visual Studio 中使用 wxWidgets

Question

Every time I try to build my project with CMAKE having the wxWidgets as library I get a lot of linker errors LNK I even get two errors for just compiling my main.cpp that only includes this :

#include "wx/wx.h"
int main(){
    return 0;
}

I just downloaded the source code of wxwidgets, put it in a lib folder and linked it with cmake This is my CMakeLists.txt :

cmake_minimum_required(VERSION 3.10)

# set the project name
project(wxtest VERSION 1.0)

add_subdirectory(libs/wxWidgets)
add_executable(wx_test WIN32 src/main.cpp)
target_link_libraries(wx_test wx::net wx::core wx::base)

Here are the errors: Error LNK1120 1 unresolved externals
Error LNK2019 unresolved external symbol WinMain referenced in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)

Is there anything wrong with linking the wxWidgets lib to my project ?

Answer 1

wxWidgets programs are compiled as GUI Win32 applications and so use WinMain() entry point by default, which you don't define.

The usual way to define it is by using wxIMPLEMENT_APP() macro, but you may also do it manually if you really need to -- but you must define it, one way or the other.