C / C++ / MFC

BOOL CDXCaptureDlg::SaveBMP(BYTE *Buffer, int width, int height, long paddedsize, char *bmpfile)<br />
{<br />
// declare bmp structures<br />
BITMAPFILEHEADER bmfh;<br />
BITMAPINFOHEADER info;<br />
<br />
// andinitialize them to zero<br />
memset ( &bmfh, 0, sizeof (BITMAPFILEHEADER ) );<br />
memset ( &info, 0, sizeof (BITMAPINFOHEADER ) );<br />
<br />
// fill the fileheader with data<br />
bmfh.bfType = 0x4d42; // 0x4d42 = 'BM'<br />
bmfh.bfReserved1 = 0;<br />
bmfh.bfReserved2 = 0;<br />
bmfh.bfSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + paddedsize;<br />
bmfh.bfOffBits = 0x36; // number of bytes to start of bitmap bits<br />
<br />
// fill the infoheader<br />
<br />
info.biSize = sizeof(BITMAPINFOHEADER);<br />
info.biWidth = width;<br />
info.biHeight = height;<br />
info.biPlanes = 1; // we only have one bitplane<br />
info.biBitCount = 24; // RGB mode is 24 bits<br />
info.biCompression = BI_RGB;<br />
info.biSizeImage = 0; // can be 0 for 24 bit images<br />
info.biXPelsPerMeter = 0x0ec4; // paint and PSP use this values<br />
info.biYPelsPerMeter = 0x0ec4;<br />
info.biClrUsed = 0; // we are in RGB mode and have no palette<br />
info.biClrImportant = 0; // all colors are important<br />
<br />
<br />
// now we open the file to write to<br />
HANDLE file = CreateFile ( bmpfile , GENERIC_WRITE, FILE_SHARE_READ,<br />
NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );<br />
<br />
if ( file == NULL )<br />
{<br />
CloseHandle ( file );<br />
return FALSE;<br />
}<br />
<br />
// write file header<br />
unsigned long bwritten;<br />
if ( WriteFile ( file, &bmfh, sizeof ( BITMAPFILEHEADER ), &bwritten, NULL ) == FALSE )<br />
{<br />
CloseHandle ( file );<br />
return FALSE;<br />
}<br />
<br />
// write infoheader<br />
if ( WriteFile ( file, &info, sizeof ( BITMAPINFOHEADER ), &bwritten, NULL ) == FALSE )<br />
{<br />
CloseHandle ( file );<br />
return FALSE;<br />
}<br />
<br />
// write image data<br />
if ( WriteFile ( file, Buffer, paddedsize, &bwritten, NULL ) == FALSE )<br />
{<br />
CloseHandle ( file );<br />
return FALSE;<br />
}<br />
<br />
// and close file<br />
CloseHandle ( file );<br />
<br />
return TRUE;<br />
}<br />