使用sendmessage（或类似功能）单击上下文菜单项 [英] click a context menu item using sendmessage (or similar function)

问题描述

我需要右键单击另一个应用程序，获取它的上下文菜单（在右键单击后打开），然后从中选择一个项目。

I need to right click on another application, gets it context menu (that was opened after the right click), and than select an item from it.

I可以将postMessage与其他应用程序句柄一起使用，结果确实出现了请求的上下文菜单，但是我不知道如何选择它。

I can use the postMessage with the other application handle, and as a results the requested context menu did appear, but I have no idea of how to select from it.

    public  const int WM_RBUTTONDOWN = 0x0204;

    public  const int WM_RBUTTONUP = 0x0205;


    [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SendMessage", CharSet = System.Runtime.InteropServices.CharSet.Auto)]

    public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);



    [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "PostMessage", CharSet = System.Runtime.InteropServices.CharSet.Auto)]

    public static extern void PostMessage(IntPtr hWnd, int msg, int wParam, int lParam);



    Point p = Cursor.Position;

    PostMessage((IntPtr)123456, WM_RBUTTONDOWN, 0, 0);

    PostMessage((IntPtr)123456, WM_RBUTTONUP, 0, 0);

下一步我应该做什么（现在上下文菜单已打开）？

what should I do next (now the context menu is open)?

谢谢，
Tomer。

thanks, Tomer.

推荐答案

我想您想触发特定操作。无需弹出上下文菜单：只需发布 WM_COMMAND 与您要选择的上下文菜单项匹配的消息。您可以使用Spy ++或 Winspector 之类的工具找到与所需菜单项关联的WM_COMMAND项ID。

I guess you want to trigger a specific action. No need to popup the context menu: Just post a WM_COMMAND message that matches the context menu item you want to select. You'll find the WM_COMMAND item id associated to the desired menu item using tools such as Spy++ or Winspector.

PostMessage((IntPtr)hWnd, WM_COMMAND, 0, ID_MENU_ITEM);

编辑：澄清您的评论：

您直接将WM_COMMAND消息发送或发布到主窗口，而不是菜单。实际上，您根本不需要弹出菜单。上下文菜单只是一个GUI元素，允许用户选择一个动作。该应用程序不需要显示菜单即可传达上述操作。

You send or post the WM_COMMAND message straight to the main window, not to the menu. Actually, you don't need to popup the menu at all. The context menu is just a GUI element that lets the user select an action. The application doesn't need the menu to show up in order to convey said action.

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