TdxNavBarGroupViewInfo.CaptionAlphaBlend Method

Returns the starting alpha blending component of the group header’s background color.

Declaration

function CaptionAlphaBlend: Byte; virtual;

Returns

Type
Byte

Remarks

Use the CaptionAlphaBlend function to obtain the starting alpha blending value of the group header’s background. This value is specified by the style applied to the group. Group header’s background style can be specified for all groups via the OptionsStyle.DefaultStyles.GroupHeader, OptionsStyle.DefaultStyles.GroupHeaderActive, OptionsStyle.DefaultStyles.GroupHeaderHotTracked and OptionsStyle.DefaultStyles.GroupHeaderPressed default styles. Individual groups can override these settings by assigning a custom style to the CustomStyles.Header, CustomStyles.HeaderActive, CustomStyles.HeaderHotTracked and CustomStyles.HeaderPressed properties of the group. The CaptionAlphaBlend function returns the AlphaBlending property value of the style assigned.

The CaptionAlphaBlend function can be used when handling the OnCustomDraw.GroupCaption event. It is useful if you don’t want to use custom alpha components of colors.