Selecting 'Invalidate entire area' from the InvalidateRect menu shows how the size of the invalid area makes the flicker more noticeable. The InvalidateRect example flickers when the mouse coordinates are updated in the area dedicated to them. These examples, in addition to demonstrating what the API does and how it works are related by one common goal which is, reducing or eliminating _flicker_ when redrawing. It will be included along with the program source when it is its turn. I won't go into a detailed explanation at this time. Roughly, 10% of the examples fall in that category (API operation visualization). It shows the parameters before the call, the parameters after the call and the effects of the call. The teaser example is a visual representation of how that API works.

The description of SetConsoleWindowInfo in MSDN isn't particularly enlightening and the MSDN example's purpose seems to be to confuse the reader (just in case you understood the questionable description that preceded it.) Their main reason to exist was to test their performance and/or behavior in unusual cases. Roughly (iow, an estimate) 50% of the examples fall in that category. IOW, you read its documentation in MSDN, code the call and you're done. These are APIs that don't have much to say about them. This is an example of the many trivial API functions in Windows. I will first give a quick description of the purpose of the 'teaser' programs before discussing details of the 'Windows Bitness' program. The 'Windows Bitness' includes full source to give an idea of what the source code for a typical example looks like. I will include the source when the time comes to give an example of the API they demonstrate. The teaser examples do _not_ include source at this time.

In addition, there is a 'Windows Bitness' program that is more an illustration of how to get the Windows bitness than how to use a specific API.

Attached to this post are six (6) 'teaser' API programs that give an idea of what these programs/examples are about.

Getwindowtext visual basic example