Problem with overriding Paint method for a DataGridViewButtonCell

[Patrik]

Hi,

I am trying to build a custom button cell for my DataGridView. I found this code below that works fine if you want an ordinary button. What I want is the flatstyle look. The only thing I would like to customize is the size of the button. How should I implement the Paint if I want the flat style look?

protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates elementState, object value,

object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)

{

//base.Paint(graphics, clipBounds, cellBounds, rowIndex,

// elementState, value, formattedValue, errorText,

// cellStyle, advancedBorderStyle, paintParts);

// Draw the cell background, if specified.

if((paintParts & DataGridViewPaintParts.Background) == DataGridViewPaintParts.Background)

{

SolidBrush cellBackground = new SolidBrush(cellStyle.BackColor);

graphics.FillRectangle(cellBackground, cellBounds);

cellBackground.Dispose();

}

// Draw the cell borders, if specified.

if((paintParts & DataGridViewPaintParts.Border) == DataGridViewPaintParts.Border)

{

PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle);

}

//Calculate the area in which to draw the button.

Rectangle buttonArea = cellBounds;

Rectangle buttonAdjustment = this.BorderWidths(advancedBorderStyle);

buttonArea.X += buttonAdjustment.X;

buttonArea.Y += buttonAdjustment.Y;

buttonArea.Height -= buttonAdjustment.Height;

buttonArea.Width -= buttonAdjustment.Width;

//Draw the disabled button.

ButtonRenderer.DrawButton(graphics, buttonArea, PushButtonState.Default);

if(this.RowIndex >= 0)

{

//Draw the disabled button text.

if(this.FormattedValue is String)

{

TextRenderer.DrawText(graphics, (string)this.FormattedValue, this.DataGridView.Font, buttonArea, SystemColors.GrayText);

}

}

}

 

[Linda Liu [MSFT]]

Hi Patrik,

I have spent more than one hour researching on the ButtonRenderer class and
haven't found a way to draw a flat style button using the ButtonRenderer
class.

I have tried with VisualStyleElement and VisualStyleRenderer classes, but
unfortunately, they don't help in solving this problem either.

In fact, the DataGridViewButtonColumn class has provided a property named
FlatStyle, which gets or sets the flat-style appearance of the button cells
in the colum. We could set the value of FlatStyle property to Flat, so that
each button cell in that column has a flat style look.

If you'd like to draw your custom button cell with a flat style look, I
suggest that you draw it by yourself. You only need to draw the border of
the 'button'.

The following is a sample.

// comment out the below statement
//ButtonRenderer.DrawButton(graphics, buttonArea, PushButtonState.Default);
// use the following statements to draw the border of the button
using (Pen p = new Pen(cellStyle.ForeColor))
{
graphics.DrawRectangle(p, buttonArea.X, buttonArea.Y,
buttonArea.Width - 1, buttonArea.Height - 1);
}

Hope this helps.
If you have any question, please feel free to let me know.


Sincerely,
Linda Liu
Microsoft Online Community Support

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[Patrik]

Thank you for a quick response!
/Patrik