[AccessD] color palette control

Well, I hadn't even considered an API. ;) Thank you Stuart -- I'll take a
look. 

Susan H. 

On 14 Aug 2004 at 18:01, Susan Harkins wrote:

> Is there a generic color palette control? I'd like to just display one 
> automatically on a form. Or, if I must, I don't mind displaying the 
> built-in palette -- but I can't figure out how to call it. For my 
> purposes, I think a fixed control would be better.
>  

The ChooseColor common dialog. If the user clicks the OK button of the
dialog box, the return value is nonzero. The rgbResult member of the
CHOOSECOLOR structure contains the RGB color value of the color selected by
the user. 

Here's some sample code from APIGuide
which you can get from http://www.allapi.net

(Note that they don't use Hungarian and use i as a loopcounter but I can
still follow their code <grin>)


Declare Function ChooseColor Lib "comdlg32.dll" Alias "ChooseColorA" 
(pChoosecolor As CHOOSECOLOR) As Long

Private Type CHOOSECOLOR
    lStructSize As Long
    hwndOwner As Long
    hInstance As Long
    rgbResult As Long
    lpCustColors As String
    flags As Long
    lCustData As Long
    lpfnHook As Long
    lpTemplateName As String
End Type

Dim CustomColors() As Byte
    'Redim the variables to store the cutstom colors
    ReDim CustomColors(0 To 16 * 4 - 1) As Byte
    Dim i As Integer
    For i = LBound(CustomColors) To UBound(CustomColors)
        CustomColors(i) = 0
    Next i




Private Function ShowColor() As Long
    Dim cc As CHOOSECOLOR
    Dim Custcolor(16) As Long
    Dim lReturn As Long

    'set the structure size
    cc.lStructSize = Len(cc)
    'Set the owner
    cc.hwndOwner = Me.hwnd
    'set the application's instance
    cc.hInstance = App.hInstance
    'set the custom colors (converted to Unicode)
    cc.lpCustColors = StrConv(CustomColors, vbUnicode)
    'no extra flags
    cc.flags = 0

    'Show the 'Select Color'-dialog
    If CHOOSECOLOR(cc) <> 0 Then
        ShowColor = cc.rgbResult
        CustomColors = StrConv(cc.lpCustColors, vbFromUnicode)
    Else
        ShowColor = -1
    End If
End Function




-- 
Stuart


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