![关于WM_GETTEXT的应用 关于WM_GETTEXT的应用](https://image.shishitao.com:8440/aHR0cHM6Ly9ia3FzaW1nLmlrYWZhbi5jb20vdXBsb2FkL2NoYXRncHQtcy5wbmc%2FIQ%3D%3D.png?!?w=700&webp=1)
HWND hw = ::FindWindow(NULL,"Form1");
HWND hw2 = ::FindWindowEx(hw,NULL,NULL,NULL);
int len = ::SendMessage(hw2, WM_GETTEXTLENGTH, 0, 0);
char* buffer = new char[len+1];
int n = ::SendMessage(hw2,WM_GETTEXT,len+1,(LPARAM)buffer);
MessageBox(buffer);