[RESOLVED] How to draw gradient over toolbar?

Am trying to emulate the gradient look in explorer so am using the code below (i found here on vbforums) to draw gradient over the toolbar in vb6sp6, using the toolbar in common controls v5sp2, but nothings happens.

I enabled theme by using manifest in my app.

vb Code:

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 GradientFillRect Lib "msimg32" Alias "GradientFill" (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 1999
    'URL: [url]http://www.allapi.net/[/url]
    'E-Mail: [email][email protected][/email]
    'API uses pixels
    Me.ScaleMode = vbPixels
End Sub
Private Sub Form_Paint()
    Dim vert(1) As TRIVERTEX
    Dim gRect As GRADIENT_RECT
 
    'from black
    With vert(0)
        .x = 0
        .y = 0
        .Red = 0&
        .Green = 0& '&HFF&   '0&
        .Blue = 0&
        .Alpha = 0&
    End With
 
    'to blue
    With vert(1)
        .x = Me.ScaleWidth
        .y = Me.ScaleHeight
        .Red = 0&
        .Green = 0&
        .Blue = LongToUShort(&HFF00&)
        .Alpha = 0&
    End With
 
    gRect.UpperLeft = 0
    gRect.LowerRight = 1
 
 GradientFillRect GetDC(tbMain.hwnd), vert(0), 2, gRect, 1, GRADIENT_FILL_RECT_H
End Sub

Does anybody knows why the code is not working?

tbMain.hwnd is not what you want. You want the child window of the tbMain.hwnd.

Read the posts in this thread, it applies.

thanks Lavolpe, this solves my problem

Please one more thing, if i want to translate this structure

vb Code:

With vert(0)
        .x = 0
        .y = 0
        .Red = 0&
        .Green = 0& '&HFF&   '0&
        .Blue = 0&
        .Alpha = 0&
    End With

from color values like #eeead6 to the individual red,green, and blue, how do i get these values in ushort

(Not in answer to your last question) but just in case it could be useful for you, i have a thread in the CodeBank about chaging Toolbar background to any color or using a picture as pattern, here is the link:
http://www.vbforums.com/showthread.php?t=381167

Quote:

---

Originally Posted by coolcurrent4u

...
from color values like #eeead6 to the individual red,green, and blue, how do i get these values in ushort

---

What is #eeead6? Looks like an html color value? If it is then

Code:

---

Red = CLng("&H" & Mid$("#eeead6",2,2))
Green = CLng("&H" & Mid$("#eeead6",4,2))
Blue= CLng("&H" & Right$("#eeead6",2))

---

Quote:

---

Originally Posted by jcis

(Not in answer to your last question) but just in case it could be useful for you, i have a thread in the CodeBank about chaging Toolbar background to any color or using a picture as pattern, here is the link:
http://www.vbforums.com/showthread.php?t=381167

---

Thanks for replying, but if you notice, i am trying to solve the question i asked in that thread in this thread

Quote:

---

Originally Posted by LaVolpe

What is #eeead6? Looks like an html color value? If it is then

Code:

---

Red = CLng("&H" & Mid$("#eeead6",2,2))
Green = CLng("&H" & Mid$("#eeead6",4,2))
Blue= CLng("&H" & Right$("#eeead6",2))

---

---

thanks laVolpe. if i have any issues with it, i'll let you know