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How to change the checkbox size based on DPI?

2 mins read

By default, the WinForms Gridcontrol will not be changed based on current DPI. So, checkbox will be drawn with the default size in all DPI. In order to change the CheckBox size based on the current DPI, the CheckboxSize property of GridCheckBoxCellRenderer class can be used.

Code Snippet


//To change the CheckBox size based on DPI.
GridCheckBoxCellRenderer renderer = this.gridControl1.CellRenderers["CheckBox"] as GridCheckBoxCellRenderer;
System.Drawing.Size checkboxSize = renderer.CheckBoxSize;
//Default DPI
float defaultDpi = 96;
float currentDpi;
using (Graphics g = this.CreateGraphics())
    currentDpi = g.DpiX;
    if (currentDpi != defaultDpi)
        float scalefactor = currentDpi / defaultDpi;
        renderer.CheckBoxSize = new Size((int)(scalefactor * checkboxSize.Width), (int)(scalefactor * checkboxSize.Height));



'To change the CheckBox size based on DPI.
Dim renderer As GridCheckBoxCellRenderer = TryCast(Me.gridControl1.CellRenderers("CheckBox"), GridCheckBoxCellRenderer)
Dim checkboxSize As System.Drawing.Size = renderer.CheckBoxSize
'Default DPI
Dim defaultDpi As Single = 96 
Dim currentDpi As Single
Using g As Graphics = Me.CreateGraphics()
    currentDpi = g.DpiX
    If currentDpi <> defaultDpi Then
        Dim scalefactor As Single = currentDpi / defaultDpi
            renderer.CheckBoxSize = New Size(CInt(Fix(scalefactor * checkboxSize.Width)), CInt(Fix(scalefactor * checkboxSize.Height)))
    End If
End Using



Showing change the CheckBox size



The CheckBoxsize can also be changed in GridGroupingControl for current DPI as the same way.


Getting the GridCheckBoxCellRenderer


GridCheckBoxCellRenderer renderer = this.gridGroupingControl1.TableControl.CellRenderers["CheckBox"] as GridCheckBoxCellRenderer;



Dim renderer As GridCheckBoxCellRenderer = TryCast(Me.gridGroupingControl1.TableControl.CellRenderers("CheckBox"), GridCheckBoxCellRenderer)


Sample Link:

C#: CheckBoxSize_CS 

VB: CheckBoxSize_VB



I hope you enjoyed learning about how to change the checkbox size based on DPI.

You can refer to our WinForms GridControl‚Äôs feature tour page to know about its other groundbreaking feature representations. You can also explore our documentation to understand how to create and manipulate data.

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