Using Transparent PNG with AdvGlowButton/ImageList

VCL TMS VCL UI Pack
1

Hi,


I'm trying to load transparent PNG into a TImageList, assign that to an AdvGlowButton using the ImageIndex property.

It appears TImageList does not support transparent PNG properly. It will load a PNG but appears to convert it to a bitmask and bitmap and does not preserve the transparency properly.

I can use the Picture property of the AdvGlowButton to load the PNG and it will render it properly but I have 900+ forms in my app and I want all buttons point back to a single TImageList image repository referenced by the ImageIndex so I only have to update the image once. I don't want to go through all these forms and manually load the PNG into each button as this creates a maintenance nightmare.

Is there any conceivable way of achieving this with AdvGlowButton?
Is there a simple way to extend AdvGlowButton to support say a TGDIPictureContainer with a PictureName, HotPictureName and DisabledPictureName or is there another better suited button I can use on AdvToolBar?

Regards
Adam
2

By the way the TImageList is set to cd32Bit and dsTransparent so it loads the PNG but it doesn't store it internally correctly.

3
I can assign the AdvGlowButton Picture at runtime from the picture container like this:

   Gdippicturecontainer::TPictureItem *item = GDIPPictureContainer1->Items->Items[0];
   TAdvGDIPPicture *picture = item->Picture;

   TMemoryStream *stream = new TMemoryStream();
   picture->SaveToStream(stream);
   AdvGlowButton1->Picture->LoadFromStream(stream);
   delete stream;
 
Messy! Is there a better solution?
4

Hi,

had the same issue yesterday. I solved it using a TPngImageList due to Delphi 2006 does not support cd32bit.

Here you can find the PNGImageList: https://code.google.com/p/cubicexplorer/downloads/detail?name=PngComponents.zip&can=2&q=

Regards,
Tiemo
5

Thanks Tiemo, I did have a look at that component but couldn't get it to compile under Delphi XE6 and don't know enough pascal to know how to fix it. What version are you using?

6

Found an XE6 install package and got it installed in C++Builder XE6. At first glance it seems to work. Will see how I go with it.