Save the memory bitmap to the BMP file

 

// test_clip_bmp.cpp : Defines the entry point for the console application.//#include "stdafx.h"#include "afxwin.h"int SaveHBITMAP( HBITMAP hB, char * lpsz_FileName ) {BITMAP csBitmap;int nRetValue = GetObject(hB, sizeof(csBitmap), &csBitmap);unsigned long n_BPP, n_Width, n_Height;if (nRetValue) {n_Width   = (long)csBitmap.bmWidth;n_Height = (long)csBitmap.bmHeight;n_BPP     = (long)csBitmap.bmBitsPixel;long sz = csBitmap.bmWidth*csBitmap.bmHeight*(csBitmap.bmBitsPixel>>3);csBitmap.bmBits = (void *) new BYTE[ sz ];GetBitmapBits((HBITMAP)hB, sz, csBitmap.bmBits );printf( "Proceeding Image %dx%d, BPP=%d", n_Width, n_Height, n_BPP, csBitmap.bmBits );} else {printf( "Invalid Object in Clipboard Buffer" ); return 1;}DWORD *lp_Canvas = new DWORD[ n_Width * n_Height];if ( n_BPP == 32 ) {for ( unsigned long y = 0; y < n_Height; y ++ ) {for ( unsigned long x = 0; x < n_Width; x ++ ) {RGBQUAD * rgb = ((RGBQUAD *) ((char*)(csBitmap.bmBits) + csBitmap.bmWidthBytes*y + x*sizeof(DWORD)) );lp_Canvas[ (n_Height - 1 - y)*n_Width + x ] = *((DWORD *)rgb);}}} else if ( n_BPP == 24 ) {for ( unsigned long y = 0; y < n_Height; y ++ ) {for ( unsigned long x = 0; x < n_Width; x ++ ) {RGBTRIPLE rgbi = *((RGBTRIPLE *) ((char*)(csBitmap.bmBits)+ csBitmap.bmWidthBytes*y + x*3) );RGBQUAD rgbq;rgbq.rgbRed = rgbi.rgbtRed;rgbq.rgbGreen = rgbi.rgbtGreen;rgbq.rgbBlue = rgbi.rgbtBlue;lp_Canvas[ (n_Height - 1 - y)*n_Width + x ] = *((DWORD *)(&rgbq));}}} else {// here I could handle other resultions also, but I think it is // too obvoius to add them here.... }unsigned long n_Bits = 32;FILE *pFile = fopen(lpsz_FileName, "wb");if(pFile == NULL) { printf("File Cannot Be Written"); return 1; }// save bitmap file headerBITMAPFILEHEADER fileHeader;fileHeader.bfType = 0x4d42;fileHeader.bfSize = 0;fileHeader.bfReserved1 = 0;fileHeader.bfReserved2 = 0;fileHeader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);fwrite( (char*)&fileHeader, sizeof(fileHeader), 1, pFile );// save bitmap info headerBITMAPINFOHEADER infoHeader;infoHeader.biSize = sizeof(infoHeader);infoHeader.biWidth = n_Width;infoHeader.biHeight = n_Height;infoHeader.biPlanes = 1;infoHeader.biBitCount = ( unsigned short )( n_Bits & 0xffff );infoHeader.biCompression = BI_RGB;infoHeader.biSizeImage = 0;infoHeader.biXPelsPerMeter = 0;infoHeader.biYPelsPerMeter = 0;infoHeader.biClrUsed = 0;infoHeader.biClrImportant = 0;fwrite( (char*)&infoHeader, sizeof(infoHeader), 1, pFile );fwrite( (char*)lp_Canvas, 1, (n_Bits >> 3)*n_Width*n_Height, pFile );fclose( pFile );return 0;}int main( int, char ** ) {if (!::IsClipboardFormatAvailable(CF_BITMAP)) {printf( "Nothing in BMP buffer" ); return 0;}if ( OpenClipboard ( 0 ) ) {HBITMAP hBitmap = (HBITMAP)GetClipboardData( CF_BITMAP );CloseClipboard();if ( hBitmap ) {GlobalLock( hBitmap );char outfile[255] = "clipboard.bmp";SaveHBITMAP( hBitmap, outfile );GlobalUnlock( hBitmap );} else {printf( "Nothing in buffer" );}} else {printf( "Windows Clipboard cannot be opened" );}return 0;}