我需要能够控制外部Qt应用程序,以便我可以在应用程序中打开文件。
我尝试使用Process获取Window Handle,然后使用GetMenu,GetSubMenu和GetMenuItemID通过PInvoke获取使用SendMessage的所有参数和外部应用程序中打开菜单上的“Click”
如果我使用Notepad作为外部应用程序进行尝试,但这与使用Qt编写的实际应用程序无关。
我确实得到了Window句柄,但GetMenu返回0。
我有这段代码
[DllImport("user32.dll")]
private static extern IntPtr GetMenu(IntPtr hWnd);
[DllImport("user32.dll")]
private static extern IntPtr GetSubMenu(IntPtr hMenu, int nPos);
[DllImport("user32.dll")]
private static extern uint GetMenuItemID(IntPtr hMenu, int nPos);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
private void OpenButton_Click(object sender, EventArgs e)
{
OpenDocument("notepad", "test.doc");
}
public void OpenDocument(string windowTitle, string document)
{
IntPtr hWnd = GetWindow(windowTitle);
IntPtr hMenu = GetMenu(hWnd);
IntPtr hSubMenu = GetSubMenu(hMenu, 0); // File menu
uint menuItemId = GetMenuItemID(hSubMenu, 2); // Open
IntPtr ptr = SendMessage(hWnd, (uint)WM.COMMAND, (IntPtr)menuItemId, IntPtr.Zero);
}
private static IntPtr GetWindow(string windowTitle)
{
IntPtr hWnd = IntPtr.Zero;
Process[] processes = Process.GetProcesses();
foreach (Process p in processes)
{
if (p.MainWindowTitle.IndexOf(windowTitle, StringComparison.InvariantCultureIgnoreCase) > -1)
{
hWnd = p.MainWindowHandle;
break;
}
}
return hWnd;
}
如何从Qt应用程序中获取菜单和子菜单以及menuitemid的句柄?
// Anders