topic Re: How to accept a Jig keyword without entering an extra space key or enter key in .NET Forum

How to accept a Jig keyword without entering an extra space key or enter key

Miralkong — Thu, 14 Dec 2023 13:14:36 GMT

I'm using Jig for a block reference insertion. Everything is fine except that I have to enter an extra space key or enter key to let AutoCAD know that the keyword has been entered completely.

I find another application which sets all keywords with only one letter. In that case, when users finish typing the letter(without space key or enter key), the application could respond immediately.

Base on the application's UI, I guess the message and keywords settings are as follow:

JigPromptPointOptions jigOpts = new JigPromptPointOptions(); jigOpts.UserInputControls = ( UserInputControls.Accept3dCoordinates | UserInputControls.NoZeroResponseAccepted | UserInputControls.NoNegativeResponseAccepted); jigOpts.SetMessageAndKeywords("\nSpecify intertion point[Rotate90(A)/HFlip(S)/VFlip(D)/ChangeBasePt(T)]", "A S D T");

But I could not figure out how to eliminate the space key or enter key. Could someone help? Thanks.

Re: How to accept a Jig keyword without entering an extra space key or enter key

ActivistInvestor — Thu, 14 Dec 2023 21:52:33 GMT

I think the only way to do that is to monitor keystrokes using a message filter.

Re: How to accept a Jig keyword without entering an extra space key or enter key

Miralkong — Fri, 15 Dec 2023 06:12:03 GMT

Thanks for reply. It seems promising. I added some code like below:

private class JigFilter : IMessageFilter { const int WM_KEYDOWN = 0x0100; public bool PreFilterMessage(ref Message m) { Autodesk.AutoCAD.ApplicationServices.Document acDoc = AcadApp.DocumentManager.MdiActiveDocument; Editor acEditor = acDoc.Editor; if (m.Msg == WM_KEYDOWN && (Keys)m.WParam == Keys.A) { acEditor.WriteMessage("A "); //acEditor.WriteMessage("A\n"); return true; } return false; } }

It did catch the A keystroke. However when I tried to send "A " or "A\n" back to the dragging. The Drag status is PromptStatus.Other instead of PromptStatus.Keyword and the StringResult is null. I believe there are other ways to send the message back to keyword. Could you give me more specific instructions? Thanks.

Re: How to accept a Jig keyword without entering an extra space key or enter key

braistorm — Fri, 15 Dec 2023 11:59:14 GMT

you can catch the keydown message,if the message is expected then send enter to the command line or using keybd_event to emulate 'enter'.

Another way to catch the keydown messgae is using Application.PreTranslateMessage, see https://www.cnblogs.com/chenshuangjian/p/15958356.html