为什么带有WM_LBUTTONDBLCLK的PostMessage不起作用？

Question

我运行以下代码：

LPPOINT pp = new POINT;
GetCursorPos(pp);
while(1){
    PostMessage(GetDesktopWindow(), WM_LBUTTONDBLCLK, 0, MAKELPARAM(pp->x, pp->y));
    Sleep(1000);
}

它不会单击光标指示的点，而是打开和关闭“开始”菜单 请告诉我怎么了

Answer 1

将// GET: Admin/Shop/Products public ActionResult MyContractors(int? catId) { using (Db db = new Db()) { UserDTO user = db.Users.Where(x => x.Username == User.Identity.Name).FirstOrDefault(); int userId = user.UserId; // Declare a list of ProductVM List<ContractorVM> Contractors = db.Contractors.Where(x => x.UserId == userId).ToArray().Select(x => new ContractorVM(x)).ToList(); // Populate categories select list ViewBag.ContractorCategories = new SelectList(db.ContractorCategories.ToList(), "ContractorCategoryId", "ContractorCategoryName"); // Set selected category ViewBag.SelectedCat = catId.ToString(); } // Return view with list return View(Contractors); } 发送到任意窗口句柄或桌面将不会模拟鼠标单击。

但是，您可以使用SendInput，它可以模拟给定屏幕坐标（而不是窗口句柄，窗口或客户端坐标）的鼠标单击。此代码将模拟在当前光标位置处的左键单击：

WM_LBUTTONDBLCLK

请注意，您也可以使用mouse_event，但是根据MSDN上的官方文档，INPUT in[2]; // 0 = left dn, 1 = left up ZeroMemory(in, sizeof(INPUT) * 2); in[0].type = INPUT_MOUSE; in[0].mi.dwFlags = MOUSEEVENTF_LEFTDOWN; in[1].type = INPUT_MOUSE; in[1].mi.dwFlags = MOUSEEVENTF_LEFTUP; SendInput(2, in, sizeof(INPUT)); 是首选。