How to display a JPG file using BitBlt?

[TooShy2Talk]

Hi again, I need to display a JPG file from a location - ex. c:\img.jpg using BitBlt but i don't know how to implement. This will be under OnDraw() or OnPaint() function. I read that this will use CDC but i don't know how to relate. If you knew of a thread please inform me. Hope you can help me. Thanks.

[Mark Salsbery]

Example:

void CMyWnd::OnPaint()
{
    CPaintDC dc(this); // device context for painting

CImage JPEGImage;
    JPEGImage.Load(_T("c:\\img.jpg"));
    JPEGImage.BitBlt(dc, 0, 0, SRCCOPY);
}

Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[followait]

Select an HBITMAP object into a memory dc first. An easy way to get an HBITMAP from a JPG file is using GDI+. You might find it in google. gl

[TooShy2Talk]

Is JPEGImage a derived class? To create? or already exist.

[Mark Salsbery]

TooShy2Talk wrote:

Is JPEGImage a derived class?

No just a quickly chosen variable name.  The class is CImage... I forgot:

#include <atlimage.h> // CImage class

If you're using VC 6, upgrade! then I'll show a sample the long way.  The CImage class makes it easy :) Mark

Mark Salsbery Microsoft MVP - Visual C++ :java: