LoadImage how change BMP data? VirtualProtect not help !

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Roman

Joined: 21 Apr 2012
Posts: 1796

Roman 08 Aug 2013, 11:58

I create DialogBox and STATIC. Then LoadImage to STATIC
invoke LoadImage,[C1],'tree.bmp',IMAGE_BITMAP,0,0,LR_LOADFROMFILE
mov [BMPdata],eax
Then i want to change bmp data. But if i do:

Quote:

mov eax,[BMPdata]
add eax,200
mov dword [eax],$10101010

My program crashes with no errors.

I try do invoke VirtualProtect,[BMPdata],4000,PAGE_EXECUTE_READWRITE,OldFlag
This not help.
And do invoke VirtualProtect,[BMPdata],4000,PAGE_READWRITE,OldFlag
This not help.

Last edited by Roman on 08 Aug 2013, 12:02; edited 1 time in total

08 Aug 2013, 11:58

Roman

Joined: 21 Apr 2012
Posts: 1796

Roman 08 Aug 2013, 12:00

Interestingly ! How it makes Fasm, when we write:

Quote:

section '.rsrc' resource data readable writeable
bitmap pict,'drakon.bmp'

And we can change pict data !

08 Aug 2013, 12:00

Roman

Joined: 21 Apr 2012
Posts: 1796

Roman 08 Aug 2013, 17:46

My code not work ! Fill black color but my bmp have white color !

Quote:

invoke BeginPaint,[C1],ps
mov [hdc],eax
! hMemDC = CreateCompatibleDC,[hdc]
;Åñëè þçàåì LoadImage òî íå íàäî íèæíèå ñòðîêè äî (A)
DIB_RGB_COLORS = 0
mov [bmi.bmiHeader.biSize],sizeof.BITMAPINFOHEADER
mov [bmi.bmiHeader.biWidth], 429;
mov [bmi.bmiHeader.biHeight], 260
mov [bmi.bmiHeader.biPlanes], 1
mov [bmi.bmiHeader.biBitCount], 24
mov [bmi.bmiHeader.biClrImportant],0
mov [bmi.bmiHeader.biSizeImage],0
mov [bmi.bmiHeader.biCompression], 0 ;BI_RGB
! NewBMP = CreateDIBSection,[hdc], bmi, DIB_RGB_COLORS, pict2+54,0,0
;===========(A)===========
; invoke SelectObject,[hMemDC],[NewBMP] ;[hBitmap]
invoke GetClientRect,[C1],rect
invoke SelectObject,[hMemDC],[NewBMP]
invoke BitBlt,[hdc],0,0,[rect.right],[rect.bottom],[hMemDC],0,0,SRCCOPY ;
invoke DeleteDC,[hMemDC]
invoke DeleteObject,[NewBMP] ;[hBitmap]
invoke EndPaint,[C1],ps

08 Aug 2013, 17:46

tthsqe

Joined: 20 May 2009
Posts: 767

tthsqe 08 Aug 2013, 18:34

if you are having trouble with createdibsection, you might want to look at my example at http://board.flatassembler.net/topic.php?t=15003

08 Aug 2013, 18:34

AsmGuru62

Joined: 28 Jan 2004
Posts: 1628
Location: Toronto, Canada

AsmGuru62 08 Aug 2013, 21:14

After BitBlt() there should be SelectObject() which will pull NewBMP back for deletion.

08 Aug 2013, 21:14

Roman

Joined: 21 Apr 2012
Posts: 1796

Roman 09 Aug 2013, 05:53

Thanks ! I found my mistake.

09 Aug 2013, 05:53

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