CMFCToolbar: use Customized bitmap(HBITMAP ) runtime

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C++

//CMFCToolBar       m_wndToolBar;
if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP | CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
		!m_wndToolBar.LoadToolBar(theApp.m_bHiColorIcons ? IDR_MAINFRAME_256 : IDR_MAINFRAME))
	{
		TRACE0("Failed to create toolbar\n");
		return -1;      // fail to create
	}
	HBITMAP hBitmap = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_BITMAP1));
	//m_wndToolBar.LoadBitmap(MakeBitMapTransparent(hBitmap));
	//m_wndToolBar.CleanUpImages();

I have created one MDC MDI app which has one TOOLBAR which is using a bitmap;

I want to run time update that BITMAP and again want to load it to the Toolbar; But I am not able to find way to do it; IN above code, IDR_MAINFRAME_256 is a Toolbar with image; To create this project, just create a MDI application in VS;

Any Idea how can I run time update the Bitmap using bitmap's HBITMAP?
[Same problem as] http://stackoverflow.com/questions/9306980/cmfcmenubar-kind-of-transparency-for-a-cmfctoolbar?rq=1[^]
Thanks

Posted 13-May-13 2:38am

iDebD

Updated 7-Sep-18 0:45am

v2

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jung-kreidler · Answer 1 · 2018-09-07T00:45:00

Probably a little bit late, but it might help others.
No, there's no need for another toolbar.

When creating a toolbar the bitmap is loaded to a CMFCToolBar internal object, which can be reset by CleanUpLockedImages. After this another bitmap can be loaded with a call to LoadBitmap (same as during creating). AdjustLayout then does the re-paint job.

m_wndToolBar.CleanUpLockedImages();
m_wndToolBar.LoadBitmap(IDR_MAINFRAME_2, 0, 0, TRUE /* Locked */);
AdjustLayout();

KarstenK · Answer 2 · 2013-05-13T04:47:00

Solution 2

step into the code and you will see, that the bitmap is attached to the toolbar, so you cant change it. So you need another toolbar.

I have done that in the old XP-times and it worked fine.

Posted 13-May-13 4:47am

KarstenK

KarstenK · Answer 3 · 2013-05-13T04:35:00

Solution 1

use need to use DIFFERENT toolbars with the actual bitmap. Whether you create a new one and delete the old, or create an array is your choice.

Posted 13-May-13 4:35am

KarstenK

Comments

iDebD 13-May-13 10:44am

What I checked if I can use a PNG image in place of BMP, in that case case the background can be transparent (As BMP can't have transparent information?);

But not sure if I can use a PNG image in CMFCToolbar button

iDebD 13-May-13 11:07am

http://social.msdn.microsoft.com/Forums/en-US/vcmfcatl/thread/897e71e0-b644-4f60-945c-2fe6aa137136/

KarstenK 14-May-13 3:27am

Fine - if its works ;-)