CSplitter splitter definition Programming Software Development by greatman05 … width) with (keyboard button)+click. I don't understand how CSplitter works. Is there a definition of the splitter that I… this definiton. I tried adding a new message to the CSplitter class and modifying the divider that way, but the application… Re: CSplitter splitter definition Programming Software Development by Ancient Dragon Do you mean CSplitter from MFC ([link](http://msdn.microsoft.com/en-us/library/5xttbe5t(v=vs.80).aspx))? AFAIK you change the size of each pain by drag-and-drop, not by double clicking or other key combinations. That's all build into the CSplitter class, you need to do nothing.