易语言截获外部程序源码,截获外部程序,取指定窗口句柄,开始截获,结束截获,SetPropA,SetWindowsHookExA,CallNextHookEx,UnhookWindowsHookEx,PostMessageA,SendMessageA,LoadLibraryA,FreeLibrary,GetProcAddress,RemovePropA,GetWindowThreadProcessId,GetPro