@JackMyson said in Developing QScintilla based application then crashes:

BrStormTextMainWindow::handleTabChanged(int)

I guess this is something you implemented? What are you doing there?
According to the stack trace a tab is removed (QTabBar::removeTab(int)) and then BrStormTextMainWindow::handleTabChanged(int) is called - I guess you are trying to access something already deleted.

If someone is wondering how it's done, it's this easy:

print(self.wordAtLineIndex(self.getCursorPosition()[0], self.getCursorPosition()[1]))

Hi
Creator has a plugin folder for the designer plugin.
On windows its
C:\Qt\Tools\QtCreator\bin\plugins\designer

@taek-seo said:

how to convert 'QsciDocument' to 'QTextDocument*' ?
or
other way to find all word ?

you don't since it doesn't subclass QTextDocument.

Also i don't see any accessible methods in the QsciDocument class?!