Save the content of PictureControl to a BitMap file

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Hi all,

How can i save the content of the image present in the Picture control, i tried the following code but not able to save correct image.i am getting only Black image.

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<br />
CWnd* pWnd = GetDlgItem(IDC_PICTURE);<br />
<br />
HWND hWnd = pWnd->GetSafeHwnd();<br />
<br />
HDC hdc= ::GetDC(hWnd);<br />
<br />
cdc.Attach(hdc);<br />
<br />
MemDC.CreateCompatibleDC(&cdc);<br />
<br />
CBitmap Bmp;<br />
<br />
Bmp.CreateCompatibleBitmap(&cdc,w,b);<br />
<br />
CBitmap *pOldBitmap = MemDC.SelectObject(&Bmp);<br />
<br />
cdc.BitBlt(0,0,w,b,&MemDC,0,0,SRCCOPY);<br />
<br />
MemDC.SelectObject(pOldBitmap);<br />
<br />
CImage Image;<br />
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Image.Attach((HBITMAP)Bmp.Detach());<br />
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Image.Save(L"C:\\image.bmp");<br />
<br />

Thanks
Karthik

Posted 30-Jun-10 1:31am

karthiksharmasg

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Niklas L · Answer 1 · 2010-06-30T01:42:00

Solution 1

Looks like you are blitting the wrong way.

MemDC.BitBlt(0,0,w,b,&cdc,0,0,SRCCOPY);

Also you need some cleaning up, but maybe you already do that.

Posted 30-Jun-10 1:42am

Niklas L

karthiksharmasg · Answer 2 · 2010-06-30T01:48:00

Solution 2

Hi Niklas,

I changed the blitting but no use, Yes the cleanup has been taken care, but not in the sample code.

Posted 30-Jun-10 1:48am

karthiksharmasg

Niklas L · Answer 3 · 2010-06-30T02:49:00

Here is an alternate solution for you:

C++

CStatic *pStatic = static_cast<CStatic*>(GetDlgItem(IDC_PICTURE));
CImage image;
image.Attach(pStatic->GetBitmap());
image.Save("C:\\image.bmp");
image.Detach();

assuming you have a bitmap in your control. You might need to verify the GetBitmap() call.

karthiksharmasg · Answer 4 · 2010-06-30T03:04:00

Solution 4

I tested the code
This will work if the BMP is preloaded.
But in my case it is loaded in runtime so GetBitmap is failing.

Posted 30-Jun-10 3:04am

karthiksharmasg

Comments

Niklas L 30-Jun-10 9:07am

If it's loaded with CStatic::SetBitmap(), it should still work according to the docs.

Save the content of PictureControl to a BitMap file

4 solutions

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