Accessing gdb console in Qt-Creator

Window > Views > Debugger Log. You can type commands in the left pane and send a line to gdb using ctrl+enter. More info here: http://qt-project.org/doc/qtcreator-3.2/creator-debug-mode.html#directly-interacting-with-native-debuggers

For examining frames using the "normal" views, especially the Watchers part of the Locals and Watchers view should probably be the better approach.