hDC2 Property

Purpose

Returns a handle provided by the Microsoft Windows operating environment to memory device context of the AutoRedraw image of a Form.

Syntax

Form.hDC2

Form:Form Object

Description

This property is a Windows operating environment device context handle. The Windows operating environment manages the system display by assigning a device context for each form in your application. The AutoRedraw property requires another DC; a memory device context to draw the graphic output in a memory bitmap. You can use the hDC2 property to refer to the handle for the Form's memory device context. This provides a value to pass to Windows API calls.

The memory graphic image can be obtained with the Image property of the Form.

Example

OpenW 1, 0, 0, 400, 400

AutoRedraw = 1

Print "This is window 1"

OpenW 2, 401, 0, 400, 400

BitBlt Win_1.hDC2, 0, 0, 400, 400, Win_2.hDC, 0, 0, &H00CC0020

Remarks

The value of the hDC2 property can change while a program is running, so don't store the value in a variable; instead, use the hDC2 property each time you need it.

See Also

Form, hDC, AutoRedraw, Image, _DC(), _DC2

{Created by Sjouke Hamstra; Last updated: 09/10/2014 by James Gaite}