GDI+ Problemo

XeoN Kc

Hi guyz. I am trying to lock the bits of a gif image which is 32-bit. However, I am getting an invalid parameter on this code : BitmapData bmData = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format32BppArgb); where b is the bitmap variable in which I load the image in! Can any body help out on this? because I really have no idea now...since in 24-bit withPixelFormat24BppRgb(bmp + jpg) worked correctly! :confused: To Dare Is To Do :cool:

leppie

Try 8bitIndexed pixel format xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots

Andrew Kirillov

Hello Why do you think your GIF image is 32-bit ? You can check the PixelFormat property and you will see, that it's Format8bppIndexed. You can try to use ImageLockMode.ReadOnly mode or lock your image with PixelFormat.Format8bppIndexed or convert your image to 32-bit before (which will be useful if you are planning some image processing routines). With best regards, Andrew

XeoN Kc

Yep that's actually what I'm trying to do! To convert to 32-bit from 8 bit index....how?? bcos I really do not know! Thanks guys To Dare Is To Do

Andrew Kirillov

Hello. You can use the next code:

// create new image with desired pixel format
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);

// draw source image on the new one using Graphics
Graphics g = Graphics.FromImage(bmp);
g.DrawImage(src, 0, 0, width, height);
g.Dispose();

With best regards, Andrew