Returns/sets the blue value for a color entry in the image's palette.
Public Property Blue( _ ByVal index As Integer _ ) As Long
- Specifies the index of the palette entry to Get/Set.
Use this property along with the Red and Green properties to change the colors in palettized images. After changing these properties you must call the Refresh method to redraw the image with the new colors. The Index value must be between 0 and the value of the PaletteEntries property. The allowable values for the property are 0 to 255.
|Using Reb, Green, Blue Properties (Visual Basic)||Copy Code|
' Darken an image by subtracting a value from each palette entry Dim intIdx If ImageControl1.ImageColors <= 256 Then ' There's No Palette on 24 bit Images For Idx = 0 To ImageControl1.PaletteEntries - 1 ImageControl1.Red(Idx) = ImageControl1.Red(Idx) - 10 ImageControl1.Green(Idx) = ImageControl1.Green(Idx) - 10 ImageControl1.Blue(Idx) = ImageControl1.Blue(Idx) - 10 Next Idx End If