Question

c语言SendMessage函数的参数有几个？

为什么我用的vc里的SendMessage函数的参数只有三个，没有句柄那个？

Answer 1

LRESULT WINAPI SendMessage(
_In_ HWND hWnd,
_In_ UINT Msg,
_In_ WPARAM wParam,
_In_ LPARAM lParam
);