Thread: create a white image

Originally Posted by mr_empty

hi all,

i want a white image file with very large pixel, say about 40000 X 40000, since i cannot find the same size of image to turn it into white, so i need to create myself. but i 'm new in mfc graphics, does anybody knwo how to create it? what is the procedure or any sample code? thanks!

In MFC something like;

Code:

//needs error checking

//create an image object
CImage  Image;
Image.Create(40000,40000,32,0);//change depth and flags as needed

//get the DC to draw to
CDC *pDC=CDC::FromHandle(Image.GetDC());
//fill with white
pDC->FillSolidRect(0,0,40000,40000,RGB(255,255,255));

//save image
CString sPath="C:\\SomeFolder\\WhiteImage.bmp";
Image.Save(sPath,GUID_NULL);

//clean up
Image.ReleaseDC(pDC->Detach());

It is easier if you don't need to save the image. Use GetDC(), CreateCompatibleBitmap(), FillRect() and ReleaseDC().