Resize widgets inside a widgets when application is running

[salvador]

Hey,
i have implemented a grid like excell with Qt. Untill now i have this "Your text to link here...":https://www.dropbox.com/s/vnoyunb3byroztl/screenshot1.PNG

As you can see i have one vertical table for the vertical headers, one horizontal table for the horizontal headers, some other widgets, and i draw tha grid as you can see in the picture. I have been confused a lot about what layout i should use so the widgets occupy the apropriate amount of space and and when i resize the total window the widgets also resize. So i used the form layout and untill now it seem to be fine.

Now, i wonder how can i resize the widgets manually when the application is running. For example how can i resize only the vertical table horizontally with my mouse. Of course i don't want the total window to be resized, but the grid and the horizontal table should be resized horizontally.

I hope i was clear because it's not easy to explain.

ty

[tobias.hunger]

Show us the code... this depends heavily on how you implemented your widget.

[salvador]

unfortunately is a lillte bit big "code":http://codeviewer.org/view/code:32fa
_xDimension, _yDimension and _zDimension vectors are the values i want to visualize in the viewport and it comes from a server. I applied the layout from the Designer window. I haven't write any code that has to do with the layout