My UI widget is not displayed

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Posts: 8
Joined: Wed Apr 23, 2014 9:33 am

My UI widget is not displayed

Post by plane » Wed Apr 23, 2014 5:51 pm

Hello Everybody,

I have programming experince but I am new with Qt, JavaScript and QCAD.
So far I was able to replicate all the examples described in the web site.

I am trying to replicate the example PersistentWidgets as described at following link ... dgets.html
but I cannot get the widget displayed.

I have created the folder structure the Action and the UI file.
In PersistentWidgets.js I have copied and pasted the code from ... ete_script

I start QCAD with debugger enabled and I get an error
MyWidgets3.png (44.6 KiB) Viewed 11134 times
I have removed the if statement
	 if (!dialog.exec()) {
		 // User hit cancel:
and now I can see the following instructions are executed,
// Print the user input to the QCAD console:
	 var appWin = EAction.getMainWindow();
	 appWin.handleUserMessage("Position X: " + positionX);
	 appWin.handleUserMessage("Position Y: " + positionY);
MyWidgets4.png (3.17 KiB) Viewed 11134 times
but the widget is not displayed.

Did I miss any instruction or anything else, please?
I would be glad if you could give me any suggestion.

Kind regards,

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Posts: 7088
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Re: My UI widget is not displayed

Post by andrew » Wed Apr 23, 2014 9:02 pm

It looks like your widget is not a dialog but probably a normal widget.

Regular widgets can be shown with show:;
Dialogs are typically executed and only return to the main program once they are closed. Regular widgets can be shown / hidden at any time without influencing the flow of the main application.

Newbie Member
Posts: 8
Joined: Wed Apr 23, 2014 9:33 am

Re: My UI widget is not displayed

Post by plane » Mon Apr 28, 2014 10:26 am

Andrew thank you for your reply.

it works with following statement
// Display and execute the dialog:;
MyWidgets.prototype.beginEvent = function()
My next step is now how to capture events from my dialog.
Thank you again for your prompt answer.

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