Create thumbnails from clipboard / pure Visual Basic 6.0

Context: The required Visual Basic 6.0 function will be part of a PowerPoint COM Add-In. Either a single PowerPoint slide or several shapes will be copied to the clipboard by the Add-In. In both cases, PowerPoint automatically generates a bitmap representation of the slide / shapes in the clipboard. Project description: The required function needs to generate a .png thumbnail from the PowerPoint-generated bitmap clipboard contents (single slide / multiple shapes). Input parameters: - Width and height of thumbnail (in pixels) - Path to thumbnail file - Background color as RGB value (applies if original aspect ratio is not equal to thumbnail aspect ratio) Output: - .png thumbnail saved to specified path on disk - Downsizing in high quality incl. anti-aliasing (use GDI+) - Original aspect ratio is to be maintained - If original aspect ratio is not equal to thumbnail aspect ratio, contents are to be centered horizontally / vertically - Function to return true if thumbnail has been created successfully, false otherwise Further requirements: - Documented Visual Basic 6.0 source code - Single .bas module, no forms, no classes - Pure VB6, standard Windows API and [login to view URL], no other components (.dll, .ocx) are to be used - No temporary files are to be created (all intermediate operations need to happen in memory, not on disk) - Clipboard is to be cleared after reading bitmap Pseudo code: Public Function CreateThumbnail(Width as Integer, Height as Integer, BackColor as Long, Path as String) as Boolean OpenClipboard Bitmap = GetBitmapFromClipboard() ClearClipboard CloseClipboard PNG = CreateThumbnail(Bitmap, Width, Height, BackColor) 'Maintain aspect ration and center horizontally / vertically SavePNGtoPath PNG, Path CreateThumbnail = success 'return true if thumbnail was created successfully, otherwise false End Function Milestone payments: 1. Fully functional sample .exe which creates thumbnail from clipboard and saves it to disk as .png (test dimensions: 150x100 pixels) 2. Fully documented source code