Edge Scan

Posted On 2017-07-19 by BlackBeltVB
Tags: VB6 Miscellaneous 
Views: 84

Title Uploaded Size
EDGESCAN.ZIP 7/19/2017 8:00:03 AM 50,384

Scan for the edge of a bitmap to create a transparent region. Scans the edge of a bitmap and creates a polygon region. Use it to create odd-shaped forms. It does not scan for "internal" transparent areas - only the edge. The background color needs to be unique. Also shows how to allow form dragging without a caption. 

EdgeScan Demo

Special Instructions

Uses the following API functions:

  • CreatePolygonRgn
  • DeleteObject
  • GetPixel
  • ReleaseCapture
  • SendMessage
  • SetPixel
  • SetWindowRgn


This code originally appeared on BlackBeltVB.com, and has been republished here with the permission of Matt Hart.

About the Author

BlackBeltVB has posted a total of 89 articles.

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