mouse flickery improvement

Hello,
As second part to reduce flikkery, I have reduce it by a little code change in file:
\base\setup\welcome\welcome.c

I don't know why is it there the point of interest, but it worked for me.
The position for the change is near the lines: 1464, and 1477: (I comment the lines with C++ style comment's):

...

if (nTopic != -1)

{

 //INT nOldTopic = nTopic;

 nTopic = -1;

 /* Also repaint the buttons, otherwise nothing repaints... */

// InvalidateRect(pTopics[nOldTopic]->hWndButton, NULL, TRUE);

and there:

...

/* Repaint the description panel */

 InvalidateRect(hWndMain, &rcRightPanel, TRUE);

 }

...

The reason for this was, that the Win32API function InvalidateRect force a full repaint of the control, so it was called twice (which costs cpu times). And in this case - it was the mouse cursor on the desktop, starting with the welcome window.

have a nice coding