DrawMode Property (AForm)

Returns or sets the appearance of output for the graphics methods.

Syntax

Object.DrawMode [ = enFormDrawMode ]

The DrawMode property syntax has the following parts:

Name	Type	Description
Object	AForm	AForm object
enFormDrawMode	enumAFormDrawMode	An integer that determines the appearance of output for the graphics methods.

Where

enumAFormDrawMode:

Name	Value	Description
aformDrawModeBlackness	1 *	Blackness
aformDrawModeNotMergePen	2	Not Merge Pen
aformDrawModeMaskNotPen	3	Mask Not Pen
aformDrawModeNotCopyPen	4	Not Copy Pen
aformDrawModeMaskPenNot	5	Mask Pen Not
aformDrawModeInvert	6	Invert
aformDrawModeXorPen	7	Xor Pen
aformDrawModeNotMaskPen	8	Not Mask Pen
aformDrawModeMaskPen	9	Mask Pen
aformDrawModeNotXorPen	10	Not Xor Pen
aformDrawModeNop	11	Nop
aformDrawModeMergeNotPen	12	Merge Not Pen
aformDrawModeCopyPen	13	Copy Pen
aformDrawModeMergePenNot	14	Merge Pen Not
aformDrawModeMergePen	15	Merge Pen
aformDrawModeWhiteness	16	Whiteness

Comments

Use this property to produce visual effects with Shape or Line controls or when drawing with the graphics methods. Each pixel is compared in the draw pattern to the corresponding pixel in the existing background and then bit-wise operations are applied. For example, setting 7 (Xor Pen) uses the Xor operator to combine a draw pattern pixel with a background pixel.

The exact effect of a DrawMode setting depends on the way the color of a line drawn at run time combines with colors already on the screen. Settings 1, 6, 7, 11, 13, and 16 yield the most predictable results.

The property is not applicable for MDI Form type since drawing functions are not supported for MDI Forms.

Example

The following statement changes the AForm DrawMode to Blackness:

DrawMode=aformDrawModeBlackness

Applies to

AForm