API按钮消息 - C++ Builder / Windows SDK/API

C/C++ code

    hwndbtn=CreateWindowA("button","确认",WS_CHILD | WS_VISIBLE        |WS_BORDER |BS_PUSHBUTTON,         225,90,60,20,hwnd,NULL, hInstance,NULL);//-----------------消息循环    switch(uMsg)    {    case WM_DESTROY:        PostQuitMessage(0);        break;    default:        return DefWindowProc(hwnd,uMsg,wParam,lParam);    }    return 0;

消息循环里怎么处理按钮按下的消息？

[解决办法]
WM_LBUTTONDOWN