用 c 调用 win-api 实现自动点击c# winform 程序 的按钮

#include <windows.h>
void main()
{
    HWND windowHandle = FindWindowA(NULL, "WatchDog v1.04 (2010-06-22)");   //Can’t find a proccess

    if( windowHandle ) 
    {
        HWND hwndChild = FindWindowEx(windowHandle, NULL, NULL, NULL);

        while ( hwndChild )
        {
            HWND hwndChildChild = FindWindowEx(hwndChild, NULL, NULL, L"Start");
            if(hwndChildChild)
            {
                SendMessage(hwndChildChild, WM_LBUTTONDOWN, MK_LBUTTON, MAKELPARAM(0, 0));
                Sleep(100);
                SendMessage(hwndChildChild, WM_LBUTTONUP, MK_LBUTTON, MAKELPARAM(0, 0));
                break;
            }
            hwndChild = FindWindowEx(windowHandle, hwndChild, NULL, NULL);
        }
    }



    return;
}