always fill out complete window

[Tom]

Hi folks,

I have a splitter window in a GUI that I built. I added a TextCtrl 
window to the right side of my splitter window. Because I don't want to 
add anything else to this side of the window it would be great if the 
TextCtrl window could fill out the complete side. I couldn't find the 
appropriate command or configuration to resize the TextCtrl window 
automatically no matter what I do with my mainframe window.

Thank you for your help.
Tom