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How to copy an image file into clipboard C/C++?

Posted on 2016-07-19
  • C++
  • Windows 7
  • MS Development-Other
  • Programming
  • Images and Photos
  • +1
1
152 Views
Last Modified: 2016-07-21
I need a C++/C code example that demonstrates how to copy a 24-bit bmp picture file on the computer/disk into the clipboard.
I am working with a Visual C++ Win32 console application on Windows 7.
OpenClipboard();
EmptyClipboard();
?
hMem = GlobalAlloc(GMEM_MOVEABLE, ?);
memcpy(GlobalLock(hMem), ?, ?);
GlobalUnlock(hMem);
SetClipboardData(CF_DIB, hMem);
CloseClipboard();

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Thanks to anyone that helps.
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Question by:Member_2_7966362
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Accepted Solution

by:
sarabande earned 500 total points
ID: 41723559
the code is like the following for a 24-bit bitmapfile (not compressed).

#include <windows.h>
#include <sys/stat.h>
#include <fstream>
#include <errno.h>

int BitmapFileToClipBoard(HWND hwnd, const char * szBitmapFilePath)
{
    struct stat fs = { 0 };
    if (!stat(szBitmapFilePath, &fs) == 0)
        return errno;   // error file does not exist
    std::ifstream ifs(szBitmapFilePath, std::ios::binary | std:ios::in);
    unsigned char * buf = new unsigned char[fs.st_size];
    if (!ifs.read((char*)buf, fs.st_size)
    {
        int err = errno;
        ifs.close();
        return err;
    }
    ifs.close();
    BITMAPINFO * pDib = (BITMAPINFO *)buf;
 
    HDC hdc = CreateCompatibleDC(NULL);
    HBITMAP hBitmap = CreateDIBitmap(hdc, 
         &(pDib->bmiHeader),
         CBM_INIT,
         pDib->bmiColors,
         pDib,
         DIB_RGB_COLORS);
     if (OpenClipBoard(hwnd))
     {
          SetClipboardData(CF_BITMAP, hBitmap); 
          CloseClipboard();
          DeleteDC(hdc);
          return 0;
    }
    return -1;
}

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the code is not tested and extracted from much bigger code such that i may have forgotten some necessary things. but you may got the idea from the above and use it as a starter.

Sara
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It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.

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