Gets the preferred (maximum needed) size of the cell for the renderer control.
Syntax
| Visual Basic (Usage) |  Copy Code |
|---|
Dim instance As IRenderer
Dim g As Graphics
Dim size As Size
Dim appearance As Appearance
Dim value As Object
Dim zoomFactor As Single
Dim value As Size
value = instance.GetPreferredSize(g, size, appearance, value, zoomFactor) |
Parameters
- g
- Graphics device interface for painting the cell
- size
- Preferred or maximum needed size
- appearance
- Appearance settings of the renderer control
- value
- Object containing the name of the renderer control
- zoomFactor
- Numeric value for scaling the display of the renderer control
Return Value
Size object containing the preferred size (maximum needed size) of the cell for the renderer control
Remarks
Example
This example subclasses the IRenderer class and creates a custom renderer for the first cell in the spreadsheet to illustrate the use of the methods and events.
| C# | Copy Code |
|---|
public static CheckBox ck = new CheckBox();
class myRenderer : FarPoint.Win.Spread.CellType.IRenderer
{
public bool CanOverflow()
{
return true;
}
public bool CanBeOverflown()
{
return true;
}
public Size GetPreferredSize(Graphics g, Size s, FarPoint.Win.Spread.Appearance appr, object value, float zoom)
{
s = new Size(50, 50);
return s;
}
public void PaintCell(Graphics g, Rectangle r, FarPoint.Win.Spread.Appearance appr, object value, bool issel, bool islocked,
float zoom)
{
string s;
ck.CheckState = CheckState.Checked;
s = ck.CheckState.ToString();
Font f = new Font("MS Sans Serif", 10);
appr.BackColor = Color.Red;
appr.ForeColor = Color.Yellow;
appr.Font = f;
Brush b, b1;
b = new SolidBrush(appr.BackColor);
b1 = new SolidBrush(appr.ForeColor);
g.FillRectangle(b, r);
g.DrawString(s, appr.Font, b1, r);
b.Dispose();
b1.Dispose();
}
}
private void Form1_Load(object sender, System.EventArgs e)
{
fpSpread1.ActiveSheet.Cells[0, 0].Renderer = new myRenderer();
} |
| Visual Basic | Copy Code |
|---|
Shared ck As New CheckBox()
Public Class myRenderer
Implements FarPoint.Win.Spread.CellType.IRenderer
Public Function CanBeOverflown() As Boolean Implements FarPoint.Win.Spread.CellType.IRenderer.CanBeOverflown
Return True
End Function
Public Function CanOverflow() As Boolean Implements FarPoint.Win.Spread.CellType.IRenderer.CanOverflow
Return True
End Function
Public Function GetPreferredSize(ByVal g As Graphics, ByVal s As Size, ByVal appr As FarPoint.Win.Spread.Appearance, ByVal
value As Object, ByVal zoom As Single) As Size Implements FarPoint.Win.Spread.CellType.IRenderer.GetPreferredSize
s = New Size(50, 50)
Return s
End Function
Public Sub PaintCell(ByVal g As Graphics, ByVal r As Rectangle, ByVal appr As FarPoint.Win.Spread.Appearance, ByVal Value
As Object, ByVal issel As Boolean, ByVal islocked As Boolean, ByVal zoom As Single) Implements FarPoint.Win.Spread.CellType.IRenderer.PaintCell
Dim s As String
ck.CheckState = CheckState.Checked
s = ck.CheckState.ToString()
Dim f As New Font("MS Sans Serif", 10)
appr.BackColor = Color.Red
appr.ForeColor = Color.Yellow
appr.Font = f
Dim b, b1 As Brush
b = New SolidBrush(appr.BackColor)
b1 = New SolidBrush(appr.ForeColor)
g.FillRectangle(b, r)
g.DrawString(s, appr.Font, b1, r.X, r.Y)
b.Dispose()
b1.Dispose()
End Sub
End Class
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
FpSpread1.ActiveSheet.Cells(0, 0).Renderer = New myRenderer()
End Sub
|
Requirements
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
See Also
