Getdibits help

[EDN Admin]

Im trying to get the bits of a 1bpp bitmap using getDIBits using this code:

<div style="color:Black;background-color:White; <pre>
HDC dcmem=NULL;
PBYTE buf=NULL;
LPBITMAPINFO bmpInfo;
HBITMAP bmpfile = NULL;
<span style="color:Blue; int dibLineCount;

<span style="color:Green; //load bitmap
bmpfile = (HBITMAP)LoadImageA(NULL, FILENAME, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
<span style="color:Blue; if(!bmpfile)
{
<span style="color:Green; //Load Image failed
<span style="color:Blue; return 0;
}

<span style="color:Green; //select bitmap to dc
dcmem = CreateCompatibleDC ( NULL );
<span style="color:Blue; if (NULL==SelectObject(dcmem,bmpfile))
{
<span style="color:Green; //select object failed
DeleteDC(dcmem);
<span style="color:Blue; return 0;
}


bmpInfo = (LPBITMAPINFO)calloc(1,<span style="color:Blue; sizeof(BITMAPINFO));
bmpInfo->bmiHeader.biSize=<span style="color:Blue; sizeof(BITMAPINFOHEADER);

<span style="color:Green; //getDIBits to fill bmpInfo
dibLineCount = GetDIBits(dcmem,bmpfile,0,0,NULL,bmpInfo,DIB_RGB_COLORS);
<span style="color:Blue; if(dibLineCount == 0)
{
<span style="color:Green; //getdibits 1 failed
DeleteDC(dcmem);
free(bmpInfo);
<span style="color:Blue; return 0;
}

<span style="color:Blue; if(bmpInfo->bmiHeader.biSizeImage <= 0)
bmpInfo->bmiHeader.biSizeImage=bmpInfo->bmiHeader.biWidth*abs(bmpInfo->bmiHeader.biHeight)*(bmpInfo->bmiHeader.biBitCount+7)/8;


<span style="color:Blue; if((buf = (PBYTE)malloc(bmpInfo->bmiHeader.biSizeImage)) == NULL)
<span style="color:Blue; return 0;

bmpInfo->bmiHeader.biCompression =BI_RGB;

<span style="color:Green; //get bits
dibLineCount = GetDIBits(dcmem,bmpfile,0,bmpInfo->bmiHeader.biHeight,buf,bmpInfo,DIB_RGB_COLORS);
<span style="color:Blue; if(dibLineCount == 0)
{
<span style="color:Green; //getdibits 2 failed
DeleteDC(0,dcmem);
free(buf);
free(bmpInfo);
<span style="color:Blue; return 0;
}
[/code]
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Then I send the bits using winsock to another PC. But everytime I send the packet with the bits I see the bits only contain periods "..." or FF in hex which is very weird. I see that the second call to getDIBits returns the correct amount of lines scanned though.
Can anyone help me why the bits are like this? Any help would be appreciated.



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