Represents the display type of a layer.
You can also set the value.
- Specifying ltOpaque or ltCoverRect disables pixel-by-pixel alpha blending. Both ltCoverRect and ltOpaque have the same meaning. If the Layer.opacity property is 255, it will appear as a completely opaque rectangle. The mask image is ignored. A suitable drawing method for this type (specified in Layer.face) is dfOpaque.
- Specifying ltAlpha or ltTransparent enables pixel-by-pixel alpha blending. Both ltTransparent and ltAlpha have the same meaning. The mask image is used for transparency. A suitable drawing method for this type is dfAlpha.
- Specifying ltAddAlpha enables pixel-by-pixel additive alpha blending. A suitable drawing method for this type is dfAddAlpha.
- If you specify ltAdditive, additive synthesis is performed. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
- If you specify ltSubtractive, subtractive synthesis is performed. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
- If you specify ltMultiplicative, multiplication synthesis is performed. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
- If ltDodge is specified, dodging synthesis will be performed. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
- Specify ltDarken for comparative (dark) compositing. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
- If you specify ltLighten, comparison (bright) composition is performed. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
- If you specify ltScreen, screen multiplication composition is performed. The mask image is ignored. A suitable drawing method for this type is dfOpaque.
See Graphics Systems for other layer display types.