[Qt-creator] Qt data types and debugging

[Andre Poenitz]

On Fri, Nov 07, 2008 at 08:36:31AM -0900, Israel Brewster wrote:
> First off, I apologize if this has been asked before, but a quick  
> perusal of the archives didn't turn up anything interesting.

It has not been asked before as far as I can tell.

> I recently downloaded and tried out the developer preview release of  
> QtCreator, and in general it looked very promising. However, one of  
> the features that was shown in the screen shots and videos (and which  
> I was highly looking forward to) was the ability to view various Qt  
> data types, such as QString, in the debugger. When I tried this in my  
> application, however, the values did not show up. I could see the  
> existence of the QString variable, of course, but the value column was  
> blank, and I could not find a way to view the value.

There is some text under "Welcome -> Getting started -> Debugging
with Qt Creator"

> Looking in the QtCreator preferences window, I find a section for  
> "Type Macros" under the debugger section, which points to a script  
> file at /Applications/QtCreator.app/Contents/Resources/gdb/qt4macros  
> that would appear (to my mind, at least) to deal with displaying  
> QStrings in the debugger.

That's currently not used.

> The referenced script file, however, does  
> not appear to exist. The closest I could find was /Applications/ 
> QtCreator.app/Contents/Resources/gdbmacros/gdbmacros.cpp, which is  
> obviously a C++ source file, not a script file.

Right. That's compiled and linked together with your application
and provides the necessary infrastructure to display the Qt types.
This compilation and linking should happen automatically when
Build&Run -> Build Settings -> Link Debugging Helper  is checked.

If checking that box does not help, you could also add that file
manually to the project yourself and used QT += network in the .pro
file. That has basically the same effect.

Andre'