AutoHotkey Community

[tic]

Cool. It worked. Had to guess the enumeration (havent got the sdk installed) and couldnt find it, but theres only 2 options anyway!

over = 0
copy = 1

Thanks again Lex. This means its not necessary to have many guis now due to ahks slowness

[Lexikos]

It is defined on MSDN as CompositingMode. Once you know that enumerations in C++ begin at zero by default, there is no need for guesswork.

[tic]

i think the main bottleneck is actually ahk. For instance whenever I want to do a loop with anything then c# does it like a million times faster (may be an exaggeration) for example take a look at the code for working out which button the user is hovering over. i had to optimise it for speed as the original version was much too slow (but then this version becomes complex and hard to easily change)

So basically the slowness I'm talking about is the stuff to do with ahk that is slow....

[tic]

Oh man.....it doesnt seem feasible using this method rather than many guis...

UpdateLayeredWindow seems to be soooo slow to update the entire gui. Can just the correct area be updated rather than the whole window?

Edit:

This is very unusual. Further testing has shown that actually its very fast (faster than with many guis) except when i set the size to be 0.3x the size of the original bitmaps??

Its faster when its larger and faster when its smaller....mmmm

Edit2:

For UpdateLayeredWindow:

[Lexikos]

This:

[LuceGold]

Lexikos, this may be off the beaten path of this thread, but can, or better yet, can I use GdipCreateBitmapFromStream with alpha-blending to render & overlay (2) incoming pStreams into a single composite bitmap somehow?



....theory like

[Lexikos]

Yes - Create a bitmap to draw into (and Graphics object to draw with), then draw each input bitmap onto it.

[LuceGold]

I am sorry Lexikos, I am not a true expert *(yet), I hope to be.... but could you --please-- show me a basic example that I could work with? Nothing fancy, but just the ability to layer over 1 image over another in any arbitrary spots as a saved PNG. I would be most appreciative here.....

I've gotten pretty handy with GDI, but still not 100% clear on all the syntaxes, and how to flow control the bitmaps, etc

[Lexikos]

Perhaps tic's GDI+ standard library and examples may help. In particular, the fifth example is similar to what you're asking for.

[tic]

Yes refer any questions to that topic
You would need to get 2 gdi+ bitmaps (pBitmap) of your 2 images, and then you will Gdip_DrawImage twice, with the second 1 having a lower transparency:

[LuceGold]

Cool, thanks gentlemen! I will try this out, and check into the topic. I think I can figure this one out ... hopefully Have a very good day

[dajuha]

Has anyone found a solution to his question? Using a timer to preserve the z-order causes flickering. I've done my best to find a solution without any luck.