pushbutton Background color

[Fabrizio]

Hi

I am trying to change a background color of some cells with "pushbutton" style using the following syntax :

MyG.Item(1, 1).BackColor = Color.Red
MyG.Item(1, 1).TextColor = Color.White

but the text color changes only.
The background remains grey .

I need to change with different colors some buttons to indicate different states.

Thanks
Fabrizio.

[Administrator]

The button is drawn using the ControlPaint. DrawButton routine (or using WinXP Themed draw button code) and that will always have the same system color used for buttons.

In order to change the color you could instead provide your own drawing logic by handling the DrawCellButtonBackground event.

Here is an example: (from OnDrawCellButtonBackground classref of Essential Grid 1.6 version)

[C#]
public static void Draw3dFrame(Graphics g, int x0, int y0, int x1, int y1, int w, Color rgbTopLeft, Color rgbBottomRight)
{
Rectangle rc;

for (int i = 0; i != w; i++)
{
// Top
Brush brTL = new SolidBrush(rgbTopLeft);
rc = Rectangle.FromLTRB(x0, y0, x1, y0+1);
g.FillRectangle(brTL, rc);

// Left
rc = Rectangle.FromLTRB(x0, y0, x0+1, y1);
g.FillRectangle(brTL, rc);
brTL.Dispose();

Brush brBR = new SolidBrush(rgbBottomRight);

// Bottom
rc = Rectangle.FromLTRB(x0, y1, x1+1, y1+1);
g.FillRectangle(brBR, rc);

// Right
rc = Rectangle.FromLTRB(x1, y0, x1+1, y1);
g.FillRectangle(brBR, rc);
brBR.Dispose();

if (i != w-1)
{
x0++;
y0++;
x1--;
y1--;
}
}
}
protected override void OnDrawCellButtonBackground(GridCellButton button, Graphics g, Rectangle rect, ButtonState buttonState, GridStyleInfo style)
{
bool drawPressed = (buttonState & ButtonState.Pushed) != 0;
Color hilight = SystemColors.ControlLightLight;
Color shadow = SystemColors.ControlDarkDark;
if (!drawPressed)
{
GridPaint.Draw3dFrame(g, rect.Left, rect.Top, rect.Right-1, rect.Bottom-1, 1,
hilight, shadow);
}
else
{
Brush br = new SolidBrush(shadow);
g.FillRectangle(br, Rectangle.FromLTRB(rect.Left, rect.Bottom-1, rect.Right-1, rect.Bottom));
g.FillRectangle(br, Rectangle.FromLTRB(rect.Right-1, rect.Top, rect.Right, rect.Bottom));
br.Dispose();
}
}

[VB]

Public Shared Sub Draw3dFrame(g As Graphics, x0 As Integer, y0 As Integer, x1 As Integer, y1 As Integer, w As Integer, rgbTopLeft As Color, rgbBottomRight As Color)
Dim rc As Rectangle

Dim i As Integer

While i <> w
' Top
Dim brTL = New SolidBrush(rgbTopLeft)
rc = Rectangle.FromLTRB(x0, y0, x1, y0 + 1)
g.FillRectangle(brTL, rc)

' Left
rc = Rectangle.FromLTRB(x0, y0, x0 + 1, y1)
g.FillRectangle(brTL, rc)
brTL.Dispose()

Dim brBR = New SolidBrush(rgbBottomRight)

' Bottom
rc = Rectangle.FromLTRB(x0, y1, x1 + 1, y1 + 1)
g.FillRectangle(brBR, rc)

' Right
rc = Rectangle.FromLTRB(x1, y0, x1 + 1, y1)
g.FillRectangle(brBR, rc)
brBR.Dispose()

If i <> w - 1 Then
x0 += 1
y0 += 1
x1 -= 1
y1 -= 1
End If
i += 1
End While
End Sub 'Draw3dFrame

Protected Overrides Sub OnDrawCellButtonBackground(button As GridCellButton, g As Graphics, rect As Rectangle, buttonState As ButtonState, style As GridStyleInfo)
Dim drawPressed As Boolean = (buttonState And ButtonState.Pushed) <> 0
Dim hilight As Color = SystemColors.ControlLightLight
Dim shadow As Color = SystemColors.ControlDarkDark
If Not drawPressed Then
GridPaint.Draw3dFrame(g, rect.Left, rect.Top, rect.Right - 1, rect.Bottom - 1, 1, hilight, shadow)
Else
Dim br = New SolidBrush(shadow)
g.FillRectangle(br, Rectangle.FromLTRB(rect.Left, rect.Bottom - 1, rect.Right - 1, rect.Bottom))
g.FillRectangle(br, Rectangle.FromLTRB(rect.Right - 1, rect.Top, rect.Right, rect.Bottom))
br.Dispose()
End If
End Sub 'OnDrawCellButtonBackground

Stefan

[fabrizio]

Thanks Stefan.

I try but the example is not directly usable.

I define the following event :

Private Sub MyG_DrawCellButtonBackground(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.GridDrawCellButtonBackgroundEventArgs) Handles GridControl1.DrawCellButtonBackground

Dim drawPressed As Boolean = (e.ButtonState And e.ButtonState.Pushed) <> 0
Dim hilight As Color = SystemColors.ControlLightLight
Dim shadow As Color = SystemColors.ControlDarkDark
If Not drawPressed Then
Draw3dFrame(e.Graphics, e.Button.Bounds.Left, e.Button.Bounds.Top, e.Button.Bounds.Right - 1, e.Button.Bounds.Bottom - 1, 1, hilight, shadow)
Else
Dim br = New SolidBrush(shadow)

e.Graphics.FillRectangle(br, Rectangle.FromLTRB(e.Button.Bounds.Left, e.Button.Bounds.Bottom - 1, e.Button.Bounds.Right - 1, e.Button.Bounds.Bottom))
e.Graphics.FillRectangle(br, Rectangle.FromLTRB(e.Button.Bounds.Right - 1, e.Button.Bounds.Top, e.Button.Bounds.Right, e.Button.Bounds.Bottom))
br.Dispose()

End If
e.Cancel = True
End Sub

Now some grafic of buttons are modified but are no good, only partial buttons are drawing .

The sub Draw3dFrame does not fill the rectagle of botton but only the border.

In any case only forcing e.cancel = true the layout of buttons is modified.

Can You give me some more litte help?

Thanks
Fabrizio

[Administrator]

Attached is a little sample based on Stefan's code.

Is this what you need?

[fabrizio]

Thanks Clay ,

but i don't see any file attached

Bye
Fabrizio

[Administrator]

it has been a long day. Sorry...

[Fabrizio]

> it has been a long day. Sorry...
>

Thanks is perfect !

Every day is a to long day for me !

Bye
Fabrizio

[Greg Wright]

I need to do something similar, but need to know which row the button be drawn is on, and the event args for DrawCellButtonBackground doesn''t contain the row index. Is this possible?

Thanks.

Greg

[Administrator]

Check

e.Style.CellIdentity.RowIndex

to see if that has what you need.

[Administrator]

>The button is drawn using the ControlPaint. DrawButton routine (or using WinXP Themed draw button code) and that will always have the same system color used for buttons.
>
>In order to change the color you could instead provide your own drawing logic by handling the DrawCellButtonBackground event.
>
>Here is an example: (from OnDrawCellButtonBackground classref of Essential Grid 1.6 version)
>
>[C#]
>public static void Draw3dFrame(Graphics g, int x0, int y0, int x1, int y1, int w, Color rgbTopLeft, Color rgbBottomRight)
>{
> Rectangle rc;
>
> for (int i = 0; i != w; i++)
> {
> // Top
> Brush brTL = new SolidBrush(rgbTopLeft);
> rc = Rectangle.FromLTRB(x0, y0, x1, y0+1);
> g.FillRectangle(brTL, rc);
>
> // Left
> rc = Rectangle.FromLTRB(x0, y0, x0+1, y1);
> g.FillRectangle(brTL, rc);
> brTL.Dispose();
>
> Brush brBR = new SolidBrush(rgbBottomRight);
>
> // Bottom
> rc = Rectangle.FromLTRB(x0, y1, x1+1, y1+1);
> g.FillRectangle(brBR, rc);
>
> // Right
> rc = Rectangle.FromLTRB(x1, y0, x1+1, y1);
> g.FillRectangle(brBR, rc);
> brBR.Dispose();
>
> if (i != w-1)
> {
> x0++;
> y0++;
> x1--;
> y1--;
> }
> }
>}
>protected override void OnDrawCellButtonBackground(GridCellButton button, Graphics g, Rectangle rect, ButtonState buttonState, GridStyleInfo style)
>{
> bool drawPressed = (buttonState & ButtonState.Pushed) != 0;
> Color hilight = SystemColors.ControlLightLight;
> Color shadow = SystemColors.ControlDarkDark;
> if (!drawPressed)
> {
> GridPaint.Draw3dFrame(g, rect.Left, rect.Top, rect.Right-1, rect.Bottom-1, 1,
> hilight, shadow);
> }
> else
> {
> Brush br = new SolidBrush(shadow);
> g.FillRectangle(br, Rectangle.FromLTRB(rect.Left, rect.Bottom-1, rect.Right-1, rect.Bottom));
> g.FillRectangle(br, Rectangle.FromLTRB(rect.Right-1, rect.Top, rect.Right, rect.Bottom));
> br.Dispose();
> }
>}
>
>[VB]
>
>Public Shared Sub Draw3dFrame(g As Graphics, x0 As Integer, y0 As Integer, x1 As Integer, y1 As Integer, w As Integer, rgbTopLeft As Color, rgbBottomRight As Color)
> Dim rc As Rectangle
>
> Dim i As Integer
>
> While i <> w
> '' Top
> Dim brTL = New SolidBrush(rgbTopLeft)
> rc = Rectangle.FromLTRB(x0, y0, x1, y0 + 1)
> g.FillRectangle(brTL, rc)
>
> '' Left
> rc = Rectangle.FromLTRB(x0, y0, x0 + 1, y1)
> g.FillRectangle(brTL, rc)
> brTL.Dispose()
>
> Dim brBR = New SolidBrush(rgbBottomRight)
>
> '' Bottom
> rc = Rectangle.FromLTRB(x0, y1, x1 + 1, y1 + 1)
> g.FillRectangle(brBR, rc)
>
> '' Right
> rc = Rectangle.FromLTRB(x1, y0, x1 + 1, y1)
> g.FillRectangle(brBR, rc)
> brBR.Dispose()
>
> If i <> w - 1 Then
> x0 += 1
> y0 += 1
> x1 -= 1
> y1 -= 1
> End If
> i += 1
> End While
>End Sub ''Draw3dFrame
>
>Protected Overrides Sub OnDrawCellButtonBackground(button As GridCellButton, g As Graphics, rect As Rectangle, buttonState As ButtonState, style As GridStyleInfo)
> Dim drawPressed As Boolean = (buttonState And ButtonState.Pushed) <> 0
> Dim hilight As Color = SystemColors.ControlLightLight
> Dim shadow As Color = SystemColors.ControlDarkDark
> If Not drawPressed Then
> GridPaint.Draw3dFrame(g, rect.Left, rect.Top, rect.Right - 1, rect.Bottom - 1, 1, hilight, shadow)
> Else
> Dim br = New SolidBrush(shadow)
> g.FillRectangle(br, Rectangle.FromLTRB(rect.Left, rect.Bottom - 1, rect.Right - 1, rect.Bottom))
> g.FillRectangle(br, Rectangle.FromLTRB(rect.Right - 1, rect.Top, rect.Right, rect.Bottom))
> br.Dispose()
> End If
>End Sub ''OnDrawCellButtonBackground
>
>
>Stefan