Topic: How to catch mouse click events.

[kh001058]

Hi everybody,

I'm trying to mimic the PAN command, to begin, it must be catch the mouse click events, I think.
Is there anyway to detect the mouse click event in AutoCAD.NET : mouse_down, mouse_move, mouse_up ...

Any help regarding this issue will be appreciated.
Regards.

[Jeff H]

I had to monitor mouse events inside of Editor.CommandAsync/Editor.Command and used Autodesk.AutoCAD.ApplicationServices.Core.Application.PreTranslateMessage Event

Code - C#: [Select]

1.         private const int MK_SHIFT = 4;
2.         private const int WM_RBUTTONUP = 517;
3.         private const int WM_LBUTTONUP = 514;
4.         private const int WM_LBUTTONDOWN = 513;
5.         private const int WM_RBUTTONDOWN = 516;
6.  
7.         private void Application_PreTranslateMessage(object sender, PreTranslateMessageEventArgs e)
8.         {          
9.             var wp = e.Message.wParam.ToInt64();
10.  
11.             if (e.Message.message == WM_RBUTTONDOWN && (wp != 6 && wp != MK_SHIFT))
12.             {
13.                 e.Handled = true;
14.             }
15.             if (e.Message.message == WM_RBUTTONUP && wp != MK_SHIFT)
16.             {
17.                 Application.PreTranslateMessage -= Application_PreTranslateMessage;
18.                 e.Handled = true;
19.                 Application.DocumentManager.MdiActiveDocument.SendCancel();
20.             }
21.         }
22.  

Not much info in acad docs so this might help
https://docs.microsoft.com/en-us/windows/win32/learnwin32/mouse-clicks
https://docs.microsoft.com/en-us/windows/win32/inputdev/mouse-input-notifications