How can I simulate a button click given the handle to the button's window?

Question

I want to simulate a click on a button located in a dialog box.

I have the handle to that window. This is an Abort/Retry/Ignore kind of window.

I don\'t wan

Answer 1

Here is a complete function:

void clickControl(HWND hWnd, int x, int y)
{
    POINT p;
    p.x = x; p.y = y;
    ClientToScreen(hWnd, &p);
    SetCursorPos(p.x, p.y);
    PostMessage(hWnd, WM_MOUSEMOVE, 0, MAKELPARAM(x, y));
    PostMessage(hWnd, WM_LBUTTONDOWN, MK_LBUTTON, MAKELPARAM(x, y));
    PostMessage(hWnd, WM_LBUTTONUP, MK_LBUTTON, MAKELPARAM(x, y));
}