CommonControls (Replacement of the MS common controls)

[yereverluvinuncleber]

PROBLEM: I am populating a control's dragIcon from an MSCOMCTL imageList control but the resulting dragIcon is black when I use Krool's imageList. However, it all works fine with the MSCOMCTL imageList control.



BACKGROUND:
The source image is a PNG. The source image is written to a temporary picBox named picDragIcon using the picbox device context using GDI+, specifically, GdipDrawImageRectRectI. To accomplish this, I am using LaVolpe's C32dppDIP method to read PNGs into a VB6 picture control. In this case the picbox is merely a temporary holding control and I want to put that image into a dragIcon.


First step, I use an MSCOMCTL imageList and add the image from the temporary picbox as the sole image in the imageList.

    ImageList1.ListImages.Add , "arse", picDragIcon.Image

I then extract that image from the imageList and set it to be the dragIcon for the target control.

    picRdMap(Index).DragIcon = ImageList1.ListImages("arse").ExtractIcon

As a result, the dragIcon shows perfectly. Why do I use an imageList? If I load the dragIcon directly from the temporary picBox as below:

    picRdMap(Index).DragIcon = picDragIcon.Image ' this only works for .ico types

Then the dragIcon shows nothing, nothing at all. I think it is due to the fact that the temporary image is rendered using GDI+ or only handles .ico types. That is why I use the MSCOMCTL imageList as it somehow seems to convert the GDI+ rendered image on the picBox correctly to something the .dragIcon can use. Some sort of bitmap, anyhow, it does the job.

However, back to my problem. I want to use Krool's version of the imageList control. I prefer to use Krool's imageList as I have so far avoided using any control from MSCOMCTL instead using all of Krool's alternatives.



If I substitute Krool's imagelist the dragicon is a black square. Any ideas? I suspect this is because Krool's control is not expecting a transparent image in a standard picturebox. Any guidance would be useful.