creating bitmap

[rjkg]

I want to create the rgb24 or rgb32 bitmap having some text(example "sometext") on it . the lenght of the bitmap should be the font size and width be the length of the text("sometext").

Rajesh

[SandipG]

You can use Graphics::MeasureString for this purpose. If you need accurate width and height read this article[^]

Regards, Sandip.

[rjkg]

but my question how to create bitmap of desired size without GDI+ from scratch

Rajesh

[MANISH RASTOGI]

Use CreateBitmap API.

[rjkg]

can you sugggest me the last three parameter for creating 24bit rgb and write some text over it

Rajesh

[Rane]

Try out the below code piece...

CDC* pDC = GetDC();

CDC memDC;
memDC.CreateCompatibleDC(pDC);

CBitmap bitmap;
bitmap.CreateCompatibleBitmap(pDC, 100, 100);

CBitmap* pOldBitmap = memDC.SelectObject((CBitmap*)&bitmap);

//
// Write the Text using memDC
//

pDC->BitBlt(0, 0, 100, 100, &memDC, 0, 0, SRCCOPY);

memDC.SelectObject((CBitmap*)pOldBitmap);

ReleaseDC(pDC);

Regards, Rane

[rjkg]

can you send me the code using pure win32 api not MFC

Rajesh

[Rane]

Its pretty easy..Follow the above programming structure and replace the MFC functions with the equivalent Win32 APIs.This will be a good excercise to learn about the win32 multimedia/graphic APIs !. p.s : I know it is little time consuming ;P Regards, Rane

[Mark Salsbery]

Rane's code makes a bitmap the same format as the display. If you want to guarantee 24bpp or 32bpp you can use CreateDIBSection() instead of CreateCompatibleBitmap(). Mark

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

[Hamid Taebi]

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