[VB6] Inserire una barra colorata in un Form

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Salve ragazzi qualcuno sa come inserire una barra simile a quella che ho allegato in un Form riuscendo a sfumare i colori.Grazie

[chico62]

Per il gradiente puoi usare l'Api GdiGradientFillRect.
Esempio (adattato dall'Api Guide)

Private Type TRIVERTEX
    x As Long
    y As Long
    Red As Integer 'Ushort value
    Green As Integer 'Ushort value
    Blue As Integer 'ushort value
    Alpha As Integer 'ushort
End Type
Private Type GRADIENT_RECT
    UpperLeft As Long  'In reality this is a UNSIGNED Long
    LowerRight As Long 'In reality this is a UNSIGNED Long
End Type
Const GRADIENT_FILL_RECT_H As Long = &H0 'In this mode, two endpoints describe a rectangle. The rectangle is
'defined to have a constant color (specified by the TRIVERTEX structure) for the left and right edges. GDI interpolates
'the color from the top to bottom edge and fills the interior.
Const GRADIENT_FILL_RECT_V  As Long = &H1 'In this mode, two endpoints describe a rectangle. The rectangle
' is defined to have a constant color (specified by the TRIVERTEX structure) for the top and bottom edges. GDI interpolates
' the color from the top to bottom edge and fills the interior.
Const GRADIENT_FILL_TRIANGLE As Long = &H2 'In this mode, an array of TRIVERTEX structures is passed to GDI
'along with a list of array indexes that describe separate triangles. GDI performs linear interpolation between triangle vertices
'and fills the interior. Drawing is done directly in 24- and 32-bpp modes. Dithering is performed in 16-, 8.4-, and 1-bpp mode.
Const GRADIENT_FILL_OP_FLAG As Long = &HFF
Private Declare Function GdiGradientFillRect Lib "gdi32" Alias "GdiGradientFill" (ByVal hdc As Long, pVertex As TRIVERTEX, ByVal dwNumVertex As Long, pMesh As GRADIENT_RECT, ByVal dwNumMesh As Long, ByVal dwMode As Long) As Long
Private Function LongToUShort(Unsigned As Long) As Integer
    'A small function to convert from long to unsigned short
    LongToUShort = CInt(Unsigned - &H10000)
End Function
Private Sub Form_Load()
    'KPD-Team 2001
    'URL: http://www.allapi.net/
    'E-Mail: KPDTeam@Allapi.net
    'API uses pixels
    Me.ScaleMode = vbPixels
    Me.AutoRedraw = True
End Sub
Private Sub picture1_Paint()
    Dim vert(1) As TRIVERTEX
    Dim gRect As GRADIENT_RECT
    'from black
    With vert(0)
        .x = 0
        .y = 0
        .Red = LongToUShort(&HFF00&)
        .Green = LongToUShort(&HFF00&)
        .Blue = LongToUShort(&HFF00&)
        .Alpha = 1&
    End With
    'to red
    With vert(1)
        .x = Me.ScaleWidth
        .y = Me.ScaleHeight
        .Red = LongToUShort(&HFF00&)
        .Green = LongToUShort(&HFF00&)
        .Blue = 0&
        .Alpha = 0&
    End With
    gRect.UpperLeft = 0
    gRect.LowerRight = 1
    GdiGradientFillRect Picture1.hdc, vert(0), 2, gRect, 1, GRADIENT_FILL_RECT_H
End Sub

E' sufficiente inserire una PictureBox sul Form (Picture1) e incollare il codice di cui sopra.

Ciauz

CHico

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Semplicemente grazie mille, sei come si dice in questi casi.
MITICO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!