Question

如何让按钮控件接收消息

Answer 1

FARPROC OldButtonProc = NULL;

// 按钮窗口的新过程
static LRESULT CALLBACK ButtonNewProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
if (uMsg == WM_MOUSEMOVE)
{
// 鼠标进入
}
else if (uMsg == WM_MOUSELEVAE)
{
// 鼠标离开
}
return CallWindowProc((FARPROC)OldButtonProc, hwnd, uMsg, wParam, lParam);
}

// 子类化该按钮
OldButtonProc = (FARPROC)SetWindowLong(hButtonWnd, GWL_WNDPROC, (long)ButtonNewProc);