Thread: InvalidateRect custom-drawn trackbar

I want to redraw a custom-drawn trackbar.
I've tried InvalidateRect, UpdateWindow, and RedrawWindow.
The only thing that works is EnableWindow FALSE, EnableWindow TRUE.
What can I change to make InvalidateRect to work?
Thanks

Code:

// window flags
tmbColor=gray; chColor=gray;
slider = CreateWindow(TRACKBAR_CLASS, NULL, WS_CHILD | WS_VISIBLE | TBS_VERT | TBS_NOTICKS, x1,y1,x2,y2, hWnd, (HMENU)ID_SLIDE, hInst, NULL);

// I want to redraw it with new colors
tmbColor=blue; chColor=blue;
InvalidateRect(slider, NULL, FALSE);

// NM_CUSTOMDRAW
case CDDS_PREPAINT:
	return CDRF_NOTIFYITEMDRAW | CDRF_NOTIFYPOSTPAINT;
case CDDS_PREERASE:
case CDDS_POSTERASE:
case CDDS_ITEMPREERASE:
case CDDS_ITEMPOSTERASE:
	return CDRF_DODEFAULT;
case CDDS_ITEMPREPAINT:
	switch(itemSpec)
	{
	case TBCD_CHANNEL:
		return CDRF_DODEFAULT | CDRF_NOTIFYPOSTPAINT;
	case TBCD_THUMB:
		/* code to draw thumb with tmbColor */
		return CDRF_SKIPDEFAULT;
	}
	break;
case CDDS_ITEMPOSTPAINT:
	switch(itemSpec)
	{
	case TBCD_CHANNEL:
		/* code to draw channel with chColor */
		return CDRF_SKIPDEFAULT;
	case TBCD_THUMB:
		return CDRF_SKIPDEFAULT;
	}
	break;
case CDDS_POSTPAINT:
	return CDRF_DODEFAULT;
}

bump

Amazingly, you found the example I used to begin with.
I decided to go back through it though and see if I might discover anything.
Nope.
Oh well.
For now, I will just do the EnableWindow trick.
Thanks for trying.

Oh well.
That didn't work either.
What's weird is that when color=newcolor (nothing changes) and I hover over the thumb, then the thumb instantly changes to the new color, but not the track. But then if I click on another program's button in the taskbar and then the button back to my program to cause it to repaint, the track has the new color too.

I guess I just need to add code at ever 'case' to log all the steps this thing flows through.
I'll do that later, when I have some extra time.

I did some 'case' logging and InvalidateRect does nothing, so I went back to Google:
Custom draw trackbar

I've obviously somehow already read this I think. I don't remember.
I am refactoring my code and ran across the EnableWindow trick and thought, what the heck.
Wow, this is a good example of how comments would have saved time and headaches - man.

Sorry I wasted your time.