How to cancel a jig drag loop from a modeless dialog

[hbxiaogui]

I have a modeless dialog showing during jig.

There is a command in modeless dialog that uses acedEntSel() to pick an entity, and it returns RTREJ immediately.

I think the reason is I'm inside the jig. drag() loop, so I can't use acedEntSel().

So how can I cancel the drag loop from a modeless dialog?

[hbxiaogui]

I can't find a way to cancel the drag loop,and finally I move the command from dialog into my jig class, then use keywords to pick the entity.

[tbrammer]

Try to send <ESC> like this:

AcApDocument *pCurrDoc = acDocManager->curDocument(); 
LPCTSTR cmd = _T("\x1B"); // ESC
Acad::ErrorStatus es = acDocManager->sendStringToExecute(pCurrDoc, cmd);

If you have added a keyword to cancel the jig, you can also send the keyword with cmd=_T("yourkey\n").

[hbxiaogui]

I want to change the jig entity's property by picking another entity, the jig loop should still be there after the pick action.

I tried the solution by sending esc, it seems the esc will execute later than the pick action. 

[tbrammer · Accepted solution]

I don't think that it is possible to call acedEntSel() during a jig loop. If you need to select an entity "within" the jig, you should exit the drag loop, select and re-enter the jig by calling jig.drag().

The effect of

acDocManager->sendStringToExecute(pCurrDoc, cmd);

is the same as entering cmd on the commandline. cmd is sent to AutoCAD's command queue and will be processed as soon as the command processor is ready to parse input.

[hbxiaogui]

Thanks!

I add the button back to my dialog, and the click event only sends a keyword.

Now the loop works as expected.