32BPP Image Lists in XTPButton

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   The following works for getting a strip of four alpha icons onto my CXTPButtons....

m_bmpIcons.LoadBitmap(IDB_STRIP_XYZ);
m_imageList.Create(16, 16, ILC_COLOR32, 4, 1);
m_imageList.Add(&m_bmpIcons, RGB(0,0,0));

...

m_cBtnA.SetIcon(CSize(16,16), m_imageList.ExtractIcon(0)

m_cBtnB.SetIcon(CSize(16,16), m_imageList.ExtractIcon(1)

m_cBtnC.SetIcon(CSize(16,16), m_imageList.ExtractIcon(2)

m_cBtnD.SetIcon(CSize(16,16), m_imageList.ExtractIcon(3)

The problem is that when the button control is disabled the transparent parts render as black. I see the button sample uses discrete bitmaps for each button and that works fine here too but I'd prefer to use an image strip rather than tens of seperate bitmap resources. Can this be done?

Thanks

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AndyS Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 15 December 2004 Location: United Kingdom Status: Offline Points: 14	Post Options Post Reply Quote AndyS Report Post Thanks(0) Quote Reply Topic: 32BPP Image Lists in XTPButton Posted: 19 May 2009 at 7:21am
	The following works for getting a strip of four alpha icons onto my CXTPButtons.... m_bmpIcons.LoadBitmap(IDB_STRIP_XYZ); m_imageList.Create(16, 16, ILC_COLOR32, 4, 1); m_imageList.Add(&m_bmpIcons, RGB(0,0,0)); ... m_cBtnA.SetIcon(CSize(16,16), m_imageList.ExtractIcon(0) m_cBtnB.SetIcon(CSize(16,16), m_imageList.ExtractIcon(1) m_cBtnC.SetIcon(CSize(16,16), m_imageList.ExtractIcon(2) m_cBtnD.SetIcon(CSize(16,16), m_imageList.ExtractIcon(3) The problem is that when the button control is disabled the transparent parts render as black. I see the button sample uses discrete bitmaps for each button and that works fine here too but I'd prefer to use an image strip rather than tens of seperate bitmap resources. Can this be done? Thanks

AndyS Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 15 December 2004 Location: United Kingdom Status: Offline Points: 14	Post Options Post Reply Quote AndyS Report Post Thanks(0) Quote Reply Posted: 19 May 2009 at 9:10am
	I think I may have resolved this myself. The problem appears to be in the way CXTPImageManagerIconHandle treats the automatic construction of the disabled icons. The assumption of alpha capability within the CXTPImageManagerIconHandle appears to be driven by whether the icon handle was initialised from an HICON or from an HBITMAP. I guess that's a throwback to before ImageList icons handled alpha. The fix for me is to always use set the icon from a bitmap but I'd still like to use image strips. For now I've knocked up a support method which pulls a region of the strip bitmap out and uses that to set the bitmap on the button. This keeps my icons in easy to handle strips and avoids image lists entirely. If I've got this wrong please let me know, or if there's some support methods for single bitmap extraction from toolbar strips already in codejock then that would be good to.

Oleg Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 21 May 2003 Location: United States Status: Offline Points: 11234	Post Options Post Reply Quote Oleg Report Post Thanks(0) Quote Reply Posted: 20 May 2009 at 2:16am
	Hi, Yes, load images from bitmap or icon directly - standard ImageList support 32bit icons from WindowsXP only.
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS

Vero Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 25 May 2005 Location: Spain Status: Offline Points: 13	Post Options Post Reply Quote Vero Report Post Thanks(0) Quote Reply Posted: 08 October 2009 at 4:04am
	Hello, I have the same problem whith SetBitmap in a CXTButton. With next source: m_buttonSave.SetBitmap(CSize(32,32), IDB_SAVE); I have the disabled button in black because the bitmap is 32bpp. In previous versions (v9.81) this works fine! Please, can you help me?
	Vero