Edge Scan

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. 

About this post

Posted: 2017-07-19
By: BlackBeltVB
Viewed: 411 times

Categories

Visual Basic 6

Attachments

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

Requirements

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

Special Instructions

Uses the following API functions:

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

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