Sub MainWnd_CommandButton12_Click() 
    Dim Ret As Long 
                                       : 
    keybd_event(VK_SNAPSHOT,0,0,0) 
    keybd_event(VK_SNAPSHOT,0,KEYEVENTF_KEYUP,0) 
    Ret=IsClipboardFormatAvailable(CF_BITMAP) 
    if Ret = 0 then 
        return 
    endif 
     'クリップボードのデータを格納 
　　Ret=OpenClipboard(NULL) 
　　hBit=GetClipBordData(CF_BITMAP) 

　　 

'ボタンが押された
Sub MainWnd_CommandButton1_Click()
  keybd_event(VK_SNAPSHOT, &h79, KEYEVENTF_EXTENDEDKEY, 0)
  keybd_event(VK_SNAPSHOT, &h79, KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP, 0)
  DoEvents()
  
  If IsClipboardFormatAvailable(CF_BITMAP) <> 0 then 
    MessageBox(hMainWnd,"ok",0,0)
   End If
End Sub

Function DoEvents()
  Dim m As MSG
  While PeekMessage(m,NULL,0,0,PM_REMOVE)
	TranslateMessage(m)
	DispatchMessage(m)
  Wend
  DoEvents= TRUE
End Function