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Problem changing pixel value in a grayscale image in GDI+

I am trying to cahnge pixel value of a grayscale image using Bitmap object .
Each pixel is consists of 8 bits.

Bitmap bigim(720,480,P ixelFormat8bppI ndexed) ( I tried 8 instead
PixelFormat8bpp Indexed)

I wanted to assign the values of each pixel using

bigim.SetPixel( x,y,integer value between 0 to 255)

This method did not work. I was wondering if anyone knows how to do that.
Jul 19 '05 #1
1 5064
"Sinora" <s_*********@ho tmail.com> wrote in message
news:bo******** **@news.iastate .edu...
I am trying to cahnge pixel value of a grayscale image using Bitmap object .. Each pixel is consists of 8 bits.

Bitmap bigim(720,480,P ixelFormat8bppI ndexed) ( I tried 8 instead
PixelFormat8bpp Indexed)

I wanted to assign the values of each pixel using

bigim.SetPixel( x,y,integer value between 0 to 255)

This method did not work. I was wondering if anyone knows how to do that.

This question is off-topic here. Standard C++ knows nothing of bitmaps,
pixels, GDI and grayscales. I can't even suggest where you should take your
question because you haven't mentioned the operating system or compiler you
are using. Maybe this will help: http://www.slack.net/~shiva/welcome.txt


Jul 19 '05 #2

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