# Color Conversion Functions

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 Submitted on: 1/19/2015 4:53:00 AM By: Simon Price (from psc cd) Level: Beginner User Rating: By 8 Users Compatibility: VB 6.0 Views: 1451

Convert any color format (hex, long, rgb) to any other color format. There may be other examples of this on PSC, but I checked them and they do not use the same algorithm. This is not the fastest way to convert colors, but it is simple and reliable.

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 ``` '************************************** ' Name: Color Conversion Functions ' Description:Convert any color format (hex, long, rgb) to any other color format. There may be other examples of this on PSC, but I checked them and they do not use the same algorithm. This is not the fastest way to convert colors, but it is simple and reliable. ' By: Simon Price (from psc cd) '************************************** ' *** COLOR CONVERSTION FUNCTIONS *** ' this is the main function, all the other converstion functions play off this 1 ' accepted input hex formats: &H######, ######, #***** ' NOT: &H#***** !!! (i hope no1 would use that anyway) Public Sub Hex2RGB(strHexColor As String, r As Byte, g As Byte, b As Byte) Dim HexColor As String Dim i As Byte On Error Resume Next ' make sure the string is 6 characters long ' (it may have been given in &H###### format, we want ######) strHexColor = Right((strHexColor), 6) ' however, it may also have been given as or #***** format, so add 0's in front For i = 1 To (6 - Len(strHexColor)) HexColor = HexColor & "0" Next HexColor = HexColor & strHexColor ' convert each set of 2 characters into bytes, using vb's cbyte function r = CByte("&H" & Right\$(HexColor, 2)) g = CByte("&H" & Mid\$(HexColor, 3, 2)) b = CByte("&H" & Left\$(HexColor, 2)) End Sub Public Function RGB2Hex(r As Byte, g As Byte, b As Byte) As String On Error Resume Next ' convert to long using vb's rgb function, then use the long2rgb function RGB2Hex = Long2Hex(RGB(r, g, b)) End Function Public Sub Long2RGB(LongColor As Long, r As Byte, g As Byte, b As Byte) On Error Resume Next ' convert to hex using vb's hex function, then use the hex2rgb function Hex2RGB (Hex(LongColor)) End Sub Public Function RGB2Long(r As Byte, g As Byte, b As Byte) As Long On Error Resume Next ' use vb's rgb function RGB2Long = RGB(r, g, b) End Function Public Function Long2Hex(LongColor As Long) As String On Error Resume Next ' use vb's hex function Long2Hex = Hex(LongColor) End Function Public Function Hex2Long(strHexColor As String) As Long Dim r As Byte Dim g As Byte Dim b As Byte On Error Resume Next ' use the hex2rgb function to get the red green and blue bytes Hex2RGB strHexColor, r, g, b ' convert to long using vb's rgb function Hex2Long = RGB(r, g, b) End Function ```

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