DLL, registry, clipboard

Sample task

• Demonstration (archive file with exe i dll files)
• depends.exe
• DLL:
  • mouse cursor with the number 20000 in resources
  • exported function void StampClipboardBitmap( HWND hWnd )
    • where: hWnd - handle of the main application's window
    • if there is a bitmap (in CF_BITMAP format) in the clipboard::
      • show modal dialog box with two pictures of the bitmap: original and modified
      • modify the bitmap using the stamp (transparent color: (0, 255, 255))
      • Cancel button - close the dialog box without any action
      • OK button - copy modified bitmap to the clipboard (in CF_BITMAP format) and text (in CF_TEXT format) with information
    • if there is no bitmap in the clipboard, show message box
• Application:
• Clipboard / Modify bitmap
  • call the function from DLL: StampClipboardBitmap( hWnd )
• Registry / Software\Microsoft\Windows\CurrentVersion\Run
  • get from the registry list of programs run during windows startup (values of the key HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run)
  • show the list in the main window
• Cursor / Standard
  • change window's cursor
• Icon / From DLL
  • set window's icon using icon taken from DLL
• IMPORTANT: DLL must be linked dynamically, show custom message box when there is no DLL.
• Hints:
  • OpenClipboard(), IsClipboardFormatAvailable(), GetClipboardData(), SetClipboardData(), CloseClipboard()
  • GlobalAlloc(), GlobalLock(), GlobalUnlock()
  • TransparentBlt()
  • LoadCursor(), SetCursor(), WM_SETCURSOR
  • LoadLibrary(), FreeLibrary(), GetProcAddress()
  • RegOpenKeyEx(), RegEnumValue(), RegCloseKey()
  • DrawText()