BITMAP

Gausi Eric

Delphi Developer

Tue, 06 Oct 1998 03:00:00 GMT

BITS -> BITMAP

Excuse my English i am a French

I want a pointer to bits of Bitmap for direct
modification of this bits and to look the modification
directly on a screen.

Can you help me.
a example of program is very apprecied.

THANK YOU.

Gausi Eric.

Christian Bra

Delphi Developer

Sun, 11 Oct 1998 03:00:00 GMT

Re:BITS -> BITMAP

In article <3177998B.7...@obspm.fr>, eric.ga...@obspm.fr says...

Quote

>Excuse my English i am a French

>I want a pointer to bits of Bitmap for direct
>modification of this bits and to look the modification
>directly on a screen.

>Can you help me.
>a example of program is very apprecied.

>THANK YOU.

>Gausi Eric.

Hello Eric,
how about using GETBITMAPBITS from the Windows API?!

function GetBitmapBits(Bitmap: HBitmap; Count: LongInt; Bits: Pointer):
LongInt;

then carry out your modifications, call CREATEDIBITMAP

function CreateDIBitmap(DC: HDC; var InfoHeader: TBitmapInfoHeader; dwUsage:
LongInt; InitBits: PChar; var InitInfo: TBitmapInfo; wUsage: Word): HBitmap;

and finally BITBLT it to your DC!

function BitBlt(DestDC: HDC; X, Y, nWidth, Height: Integer; SrcDC: HDC;
XSrc, YSrc: Integer; Rop: LongInt): Bool;

Cheers Christian

--
-------------------------------------------------------------------------------
| Christian Braun | TTTTT U U |
| Iwan-N.-Stranski-Institut der TU Berlin | T U U |
| Sekr. ER 1 | T U U |
| Strasse des 17. Juni 112 | T U U |
| D-10623 Berlin | T UUU Berlin |
| -------------------------|

| |
|http://webwork.zrz.tu-berlin.de/~insi/ag_findenegg/Christian/christia... |
-------------------------------------------------------------------------------

Lurk

Delphi Developer

Mon, 12 Oct 1998 03:00:00 GMT

Re:BITS -> BITMAP

In Delphi 2.0, use the Win32 api CreateDIBSection, and assign the
bitmap handle it returns to a TBitmap object. You can then access and
modify the pixel bits in memory without having to destroy and recreate
the bitmap handle.

-Danny

Quote

chri0...@mailszrz.zrz.tu-berlin.de (Christian Braun) wrote:
>In article <3177998B.7...@obspm.fr>, eric.ga...@obspm.fr says...

>>Excuse my English i am a French

>>I want a pointer to bits of Bitmap for direct
>>modification of this bits and to look the modification
>>directly on a screen.

>>Can you help me.
>>a example of program is very apprecied.

>>THANK YOU.

>>Gausi Eric.
>Hello Eric,
>how about using GETBITMAPBITS from the Windows API?!
>function GetBitmapBits(Bitmap: HBitmap; Count: LongInt; Bits: Pointer):
>LongInt;
>then carry out your modifications, call CREATEDIBITMAP
>function CreateDIBitmap(DC: HDC; var InfoHeader: TBitmapInfoHeader; dwUsage:
>LongInt; InitBits: PChar; var InitInfo: TBitmapInfo; wUsage: Word): HBitmap;
>and finally BITBLT it to your DC!
>function BitBlt(DestDC: HDC; X, Y, nWidth, Height: Integer; SrcDC: HDC;
> XSrc, YSrc: Integer; Rop: LongInt): Bool;
>Cheers Christian
>--
>-------------------------------------------------------------------------------
>| Christian Braun | TTTTT U U |
>| Iwan-N.-Stranski-Institut der TU Berlin | T U U |
>| Sekr. ER 1 | T U U |
>| Strasse des 17. Juni 112 | T U U |
>| D-10623 Berlin | T UUU Berlin |
>| -------------------------|

>| |
>|http://webwork.zrz.tu-berlin.de/~insi/ag_findenegg/Christian/christia... |
>-------------------------------------------------------------------------------

Lord of Darknes

Delphi Developer

Mon, 12 Oct 1998 03:00:00 GMT

Re:BITS -> BITMAP

I uploaded a CreateDIBsection demo to the Delphi super page a couple of
days ago. It's in the Freeware 2 section. It may help.

John B

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