#include <iostream.h>
#include <windows.h>
#include <stdio.h>
void TakeScreenShot(char* );
int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow){
     TakeScreenShot("c:\\Screenshot.bmp");
     return 0;
}
void TakeScreenShot(char* filename){
     keybd_event(VK_SNAPSHOT, 0x45, KEYEVENTF_EXTENDEDKEY, 0);
     keybd_event(VK_SNAPSHOT, 0x45, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
     HBITMAP h;
       
     OpenClipboard(NULL);
     h = (HBITMAP)GetClipboardData(CF_BITMAP);
     CloseClipboard();
     HDC hdc=NULL;
     FILE*fp=NULL;
     LPVOID pBuf=NULL;
     BITMAPINFO bmpInfo;
     BITMAPFILEHEADER bmpFileHeader;
     do{  
         hdc=GetDC(NULL);
         ZeroMemory(&bmpInfo,sizeof(BITMAPINFO));
         bmpInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
         GetDIBits(hdc,h,0,0,NULL,&bmpInfo,DIB_RGB_COLORS);  
          
         if(bmpInfo.bmiHeader.biSizeImage<=0)
          bmpInfo.bmiHeader.biSizeImage=bmpInfo.bmiHeader.biWidth*abs(bmpInfo.bmiHeader.biHeight)*(bmpInfo.bmiHeader.biBitCount+7)/8;
      
         if((pBuf = malloc(bmpInfo.bmiHeader.biSizeImage))==NULL){
             MessageBox( NULL, "Unable to Allocate Bitmap Memory", "Error", MB_OK|MB_ICONERROR);
          break;
         }  
         bmpInfo.bmiHeader.biCompression=BI_RGB;
         GetDIBits(hdc,h,0,bmpInfo.bmiHeader.biHeight,pBuf, &bmpInfo, DIB_RGB_COLORS);
          
         if((fp = fopen(filename,"wb"))==NULL){
             MessageBox( NULL, "Unable to Create Bitmap File", "Error", MB_OK|MB_ICONERROR);
             break;
         }  
         bmpFileHeader.bfReserved1=0;
         bmpFileHeader.bfReserved2=0;
         bmpFileHeader.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+bmpInfo.bmiHeader.biSizeImage;
         bmpFileHeader.bfType='MB';
         bmpFileHeader.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);  
         fwrite(&bmpFileHeader,sizeof(BITMAPFILEHEADER),1,fp);
         fwrite(&bmpInfo.bmiHeader,sizeof(BITMAPINFOHEADER),1,fp);
         fwrite(pBuf,bmpInfo.bmiHeader.biSizeImage,1,fp);  
     }while(false);  
     if(hdc)ReleaseDC(NULL,hdc);  
     if(pBuf) free(pBuf);  
     if(fp)fclose(fp);
}