How to draw a IBitmap over a cached LICE_SysBitmap?

[Nowhk]

Hi all

When I have some "hard" stuff to calculate before Draw it, I usually (thanks to the support by Tale) flip the current bitmap to a cached one; I draw there what I need, than I re-flip and I Blit the cached result.

Here's the code:

bool Meter::Draw(IGraphics *pGraphics) {
	if (mCacheBitmap) {
		// flag cache off
		mCacheBitmap = false;

		// swap to cached bitmap...

		// my cached hard stuff (will draw to the cached Bitmap)
		pGraphics->FillIRect(&COLOR_PLUG_BORDER, &mRECTMeter);

		// back to original bitmap...
	}

	// draw cache...

	// my not-cached hard stuff (will draw to the currentBitmap)
	pGraphics->FillIRect(&COLOR_PLUG_COMPONENT, &mRECTComponent);

	return true;
}

It works like a charm. Once I recall Draw and I don't need to recalculate stuff, I just Blit the cached bitmap. With FillIRect, LICE_FLine, DrawLine or DrawIText (and many more) I don't have any problem.

The problem is when I want to Draw a Bitmap; somethings like this:

// my cached hard stuff (will draw to the cached Bitmap)
pGraphics->FillIRect(&COLOR_PLUG_BORDER, &mRECTMeter);
pGraphics->DrawBitmap(&MYBITMAP_CONTROL_BUTTON, &mRECT);

When I blit, I can't see any Bitmap drawn over the cache.
Instead, if I place the drawing at the end of the Draw function (after blit), it draws the bitmap. But that's not cached so...

Where am I wrong?
Thanks to everybody!

[ynohtna]

Are you notifying the control that it's dirty and so must be redrawn?

[Nowhk]

Originally Posted by ynohtna

Are you notifying the control that it's dirty and so must be redrawn?

Of course. Draw() it's called at every SetDirty(). In fact it cache the elements correctly when I prior set mCacheBitmap to true. The rest of the code outside that block (i.e. the end of the Draw function) redraw correctly. And also the cache works fine. Except when I try to Draw over it a Bitmap (instead of, as I said, a FillIRect or a DrawLine)...

[Nowhk]

Fixed! I was drawing on a wrong IRECT: mRECT instead of mRECTMeter. Thanks anyway for the helps