Solved

hbitmap to TImage?

Posted on 2001-07-31
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Last Modified: 2008-02-01
I have an ActiveX component which returns a windows handle to a Bitmap.
I need to get this handle into a TImage which can be saved to a file and/or displayed as part of an image component on the background of my form.

I have been able to get a HDC to the bitmap and draw on the bitmap... but I cannot figure out how to "copy" the data into a TImage.

MyHDC := CreateCompatibleDC(0);
    // ' Selects entire bitmap to this DC
SelectObject(MyHDC, HGDIOBJ(SkinObject.hEntireBitmap));

I'm sure I'm just missing something simple.
John
0
Comment
Question by:zitt
6 Comments
 
LVL 2

Expert Comment

by:bugroger
ID: 6336920
Hi zitt,


{...}
MemBitmap        := TBitmap.Create;
MemBitmap.Handle := "HBITMAP";

Image1.Width  := MemBitmap.Width;
Image1.Height := MemBitmap.Height;
Image1.Canvas.Draw(0, 0, MemBitmap);

MemBitmap.Free;
{...}

GL
 Bug

0
 
LVL 2

Expert Comment

by:bugroger
ID: 6336948
If
 MemBitmap.Handle := "HBITMAP/HDC";
does not work try this:

 MemBitmap.Handle := CreateCompatibleBitmap("HDC", "Width", "Height");

0
 
LVL 2

Expert Comment

by:bugroger
ID: 6336951
You can also try
 Image1.Picture.Bitmap.Handle := "HBitmap/HDC"
or
 Image1.Picture.Bitmap.Handle := CreateCompatibleBitmap("HDC", "Width", "Height");
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LVL 20

Accepted Solution

by:
Madshi earned 50 total points
ID: 6336983
Maybe simply "Image1.Picture.Bitmap.Handle := HBitmap;" ?

Regards, Madshi.
0
 
LVL 5

Expert Comment

by:Gwena
ID: 6338821
listening :-)
0
 

Author Comment

by:zitt
ID: 6362689
Short, simple and it seems to work.
I could have swore I tried this; however, it was likely do to inconsitancies I have with the OCX control I'm using.

John
0

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