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Syncfusion Feedback

Checkbox Size

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129896 Apr 7,2017 06:56 PM UTC May 3,2017 08:58 AM UTC WinForms 7
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Tags: GridControl
mike newett
Asked On April 7, 2017 06:56 PM UTC

Hi, how can I change the size of a checkbox within the GridControl?

I'm adding the checkbox to a cell using:
GridControl1(2, 2).CellType = GridCellTypeName.CheckBox

I'm increasing the text size within the grid using:
GridControl1.BaseStylesMap("Standard").StyleInfo.Font.Size = 20

However, the checkbox size doesn't match the font size.

I have also tried changing the checkbox size using the following, but this doesn't work either:
Dim model1 As GridCheckBoxCellModel = TryCast(Me.GridControl1.Model.CellModels("CheckBox"), GridCheckBoxCellModel)
model1.ButtonBarSize = New Size(30, 30)

Kind Regards

Mike

Arulpriya Ramalingam [Syncfusion]
Replied On April 10, 2017 06:14 AM UTC

Hi Mike, 

Thanks for your interest in Syncfusion products. 

The CheckBox size can be modified by creating a instance for the GridCheckBoxCellRenderer class and setting the size to CheckBoxSize property. Please make use of below code and sample, 

Code snippet 

'To set the CheckBox size 
Dim renderer As GridCheckBoxCellRenderer = TryCast(Me.gridControl1.CellRenderers("CheckBox"), GridCheckBoxCellRenderer) 
renderer.CheckBoxSize = New Size(30, 30) 

Screenshot 

 


Regards, 
Arulpriya 


mike newett
Replied On April 11, 2017 08:48 PM UTC

That worked perfectly, but has lead to another question.

How can I change the button size of the Month Calendar (the drop down button that opens the calendar)?

I am adding the calendar as follows: 
GridControl1(5, 2).CellType = GridCellTypeName.MonthCalendar

Kind Regards

Mike


Arulpriya Ramalingam [Syncfusion]
Replied On April 12, 2017 08:38 AM UTC

Hi Mike, 

Thanks for your update. 

The DropDownButton size of the MonthCalendar cell can be modified by creating an instance for the GridDropDownMonthCalendarCellModel class and setting the size to ButtonBarSize property. Please make use of below code and sample, 

Code snippet 

'Creating instance for GridDropDowMonthCalendarCellModel 
Dim model As GridDropDownMonthCalendarCellModel = TryCast(Me.gridControl1.CellModels("MonthCalendar"), GridDropDownMonthCalendarCellModel) 
'Setting the size to Button 
model.ButtonBarSize = New Size(30, 30) 

Note 
The ButtonSize can be modified for any GridCellButton (i.e. ComboBox dropdownbutton, numericupdownbutton, etc.,) by creating the instance for corresponding CellModel as in sample. It is depending upon the corresponding cell’s CellModel 


Regards, 
Arulpriya 


mike newett
Replied On April 12, 2017 11:46 AM UTC

That worked perfectly, but has lead to another question again.

The drop down MonthCalendar font size and spacing between the dates needs to be bigger. It is difficult to use on a touch screen device.

How can this be done?

I am adding the monthcalendar as follows:
GridControl1(5, 2).CellType = GridCellTypeName.MonthCalendar
GridControl1(5, 2).CellValue = DateTime.Now

Kind Regards

Mike


Arulpriya Ramalingam [Syncfusion]
Replied On April 13, 2017 12:34 PM UTC

Hi Mike, 
 
Thanks for your update. 
 
The font size and space between dates of the DropDownMonthCalendar can be modified by using CurrentCellShowingDropDown event. In that event, the font for the DropDownContainerControl can be set by using control.Font property and the DropDownContainer size can be increased by using size property. Please make use of below code and sample, 
 
Code snippet 
 
Private renderer As GridDropDownMonthCalendarCellRenderer 
renderer = TryCast(Me.gridControl1.CellRenderers("MonthCalendar"), GridDropDownMonthCalendarCellRenderer) 
'Event Triggering 
AddHandler gridControl1.CurrentCellShowingDropDown, AddressOf GridControl1_CurrentCellShowingDropDown 
 
'Event Customization 
Private Sub GridControl1_CurrentCellShowingDropDown(ByVal sender As Object, ByVal e As GridCurrentCellShowingDropDownEventArgs) 
    Dim currentCell As GridCurrentCell = Me.gridControl1.CurrentCell 
    If TypeOf currentCell.Renderer Is GridDropDownMonthCalendarCellRenderer Then 
        For Each control As Control In renderer.DropDownContainer.Controls 
            If control IsNot Nothing Then 
               control.Font = New Font("Segoe UI", 15f) 
               e.Size = New Size(310, 310) 
           End If 
       Next control 
   End If 
End Sub 
 
Note 
By default, MonthCalendar control does not have support to customize the font and its styles. To customize its appearance, Application.EnableVisualStyles() should not be used inside the Program.cs file. So please make sure that,     
 
Namespace CellGrid_2008 
    Friend NotInheritable Class Program 
        Private Sub New() 
        End Sub 
        <STAThread> _ 
        Shared Sub Main() 
            'Application.EnableVisualStyles(); 
            Application.SetCompatibleTextRenderingDefault(False) 
            Application.Run(New Form1()) 
        End Sub 
    End Class 
End Namespace 
 
  
 
Regards, 
Arulpriya 


mike newett
Replied On May 2, 2017 03:47 AM UTC

Hi Arulpriya,

That works brilliantly.

However, is there a way to set the dropdown calendar size automatically to allow for different font sizes and DPI settings?
I have tried calculating the height and width, but it doesn't work well. I assume there's some way of getting the bounds of the internal controls to set the size?

Finally, is it possible to change the visual style of the calendar to make it look the same as it was before visual styles were disabled?


My modified code is below:

'Set calendar font size
    Private Sub GridControl1_CurrentCellShowingDropDown(ByVal sender As Object, ByVal e As GridCurrentCellShowingDropDownEventArgs)
        Dim currentCell As GridCurrentCell = GridControl1.CurrentCell
        If TypeOf currentCell.Renderer Is GridDropDownMonthCalendarCellRenderer Then
            For Each control As Control In MonthCalendarRenderer.DropDownContainer.Controls
                If control IsNot Nothing Then
                    Dim FontSize As Integer = GridControl1.BaseStylesMap("Standard").StyleInfo.Font.Size
                    Dim CalendarHeight As Integer = 200 * (FontSize / 10)
                    Dim CalendarWidth As Integer = 210 * (FontSize / 10)
                    control.Font = New Font("Segoe UI", FontSize)
                    e.Size = New Size(CalendarWidth, CalendarHeight)

                    MonthCalendarRenderer.DropDownContainer.BorderStyle = BorderStyle.FixedSingle
                End If
            Next control
        End If
    End Sub


Kind Regards

Mike


Arulpriya Ramalingam [Syncfusion]
Replied On May 3, 2017 08:58 AM UTC

Hi Mike, 

Thanks for your update. 

Query 
Response 
is there a way to set the dropdown calendar size automatically to allow for different font sizes and DPI settings? 
I have tried calculating the height and width, but it doesn't work well. I assume there's some way of getting the bounds of the internal controls to set the size? 

By default the DropDownContainer size will not be changed based on DPI. In order to change the DropDownContainer size automatically for different DPI CurrentCellShowingDropDown event can be customized. In that event, Size property can be used to set the size for the drop down control based on DPI. Please make use of below code and sample, 
 
Dim defaultDPI As Single = 96 'default dpi for 100DPI 
Dim currentDPI As Single 
Using g As Graphics = Me.CreateGraphics() 
    currentDPI = g.DpiX 
    If currentDPI <> defaultDPI Then 
        'To get the scalefactor for different DPI 
       scalefactor = currentDPI / defaultDPI 
    End If 
End Using 
'Event Triggering 
AddHandler gridControl1.CurrentCellShowingDropDown, AddressOf GridControl1_CurrentCellShowingDropDown 
 
'Event Customization 
Private Sub GridControl1_CurrentCellShowingDropDown(ByVal sender As Object, ByVal e As GridCurrentCellShowingDropDownEventArgs) 
   Dim currentCell As GridCurrentCell = Me.gridControl1.CurrentCell 
    If TypeOf currentCell.Renderer Is GridDropDownMonthCalendarCellRenderer Then 
        For Each control As Control In renderer.DropDownContainer.Controls 
             If control IsNot Nothing Then 
                  Dim fontSize As Single = gridControl1.BaseStylesMap("Standard").StyleInfo.Font.Size 
                 control.Font = New Font("Segoe UI",(fontSize*scalefactor)) 
                  Dim width As Single = (e.Size.Width * scalefactor) 
                  Dim height As Single = (e.Size.Height * scalefactor) 
                   'To set the size for DropDown container based on DPI. 
                   e.Size = New Size(CInt(Fix(width)), CInt(Fix(height))) 
             End If 
        Next control 
   End If 
End Sub 
 
 
is it possible to change the visual style of the calendar to make it look the same as it was before visual styles were disabled? 
Yes, the VisualStyle of the calendar can be changed  as same as before by enabling the Application.EnableVisualStyles() inside of the program.cs file. Please refer the below code, 
 
Namespace CellGrid_2008 
   Friend NotInheritable Class Program 
        <System.Runtime.InteropServices.DllImport("user32.dll")> _ 
       Public Shared Function SetProcessDPIAware() As IntPtr 
       End Function 
       Private Sub New() 
       End Sub 
       <STAThread> _ 
        Shared Sub Main() 
             SetProcessDPIAware() 
             Application.EnableVisualStyles(); 
             Application.SetCompatibleTextRenderingDefault(False) 
             Application.Run(New Form1()) 
       End Sub 
   End Class 
End Namespace 
 
Note: 
If you include the EnableVisualStyles in program.cs , the appearance customization(calendar size and font size, etc)of the MonthCalendar will not be worked.  
 
Please let us know if we misunderstood anything. 



Please let us know if you need any further assistance. 

Regards, 
Arulpriya 


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