>I did something very stupid in an initial design -- inherited the textboxes in my grids (hand painted) directly from the base textbox class.
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>Naturally I ran into some global changes I wanted to make and looked with horror at the prospect of dropping and adding each textbox in each grid. After looking at programatic changes I came up with a simple solution. I opened each vcx, and did a global search and replace of class and classloc wherever class equaled textbox.
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>(Yes I made an extra backup before doing this.)
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>I recompiled my project, with the flag set to recompile all, and so far everything works fine.
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>I still worry,though. Just how dangerous is it to mess directly with the vcx in this manner? I probably had no choice in this matter. When you do something as bonehead as that, I doubt there are any "safe" solutions. But being able to do this kind of global redefine is actually quite handy. How ready should I be to use this type of solution in the future?

I use it all the time when I accidentally instanciate a control from the wrong class and don't realize it until later. Just got to make sure you do it right.