LoadFromClipBoard (C++)

Description

The following code draws a bitmap image from the Clipboard when a button is pressed. To place the icon on the clipboard, the SaveToClipboard button must be selected before the LoadFromClipboard button.

Code

#include <Clipbrd.hpp>
#include <memory>       //For STL auto_ptr class
 
void __fastcall TForm1::Button1Click(TObject *Sender)
{
  TClipboard *cb = Clipboard();
  if (cb->HasFormat(CF_BITMAP))
  {
        std::auto_ptr<Graphics::TBitmap> Bitmap(new Graphics::TBitmap());
        try
        {
          Bitmap->LoadFromClipboardFormat(CF_BITMAP, cb->GetAsHandle(CF_BITMAP), 0);
          Canvas->Draw(5, 5, Bitmap.get());
    }
        catch (...)
        {
          MessageBeep(0);
          ShowMessage("Error reading image from clipboard!");
        }
        cb->Clear();
  }
  else
  {
        MessageBeep(0);
        ShowMessage("Cannot find image in clipboard!");
  }
}
 
void __fastcall TForm1::Button2Click(TObject *Sender)
{
  unsigned int DataHandle;
  HPALETTE APalette;
  unsigned short MyFormat;
  std::auto_ptr<Graphics::TBitmap> Bitmap(new Graphics::TBitmap());
  try
  {
        Bitmap->LoadFromFile("C:\\Program Files\\Common Files\\CodeGear Shared\\Images\\Splash\\256Color\\FACTORY.BMP");
        // Generate a clipboard format, with data and palette.
        Bitmap->SaveToClipboardFormat(
          MyFormat,
          DataHandle,
          APalette);
    // Save the data to the clipboard using that format and
    // the generated data.
    Clipboard()->SetAsHandle(MyFormat,DataHandle);
  }
  catch (...)
  {
         ShowMessage("Failed to copy image to clipboard!");
  }
}

Uses

• Vcl.Graphics.TBitmap.LoadFromClipboardFormat ( fr | de | ja )
• Vcl.Graphics.TBitmap.SaveToClipboardFormat ( fr | de | ja )
• Vcl.Graphics.TPicture.RegisterClipboardFormat ( fr | de | ja )
• Vcl.Clipbrd.Clipboard ( fr | de | ja )
• Vcl.Clipbrd.TClipboard.GetAsHandle ( fr | de | ja )
• Vcl.Clipbrd.TClipboard.SetAsHandle ( fr | de | ja )
• Vcl.Clipbrd.TClipboard.Clear ( fr | de | ja )