scmmicro
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Placing Checkboxes in flexgrid
I have a MSFlexgrid in my VB form.It has one fixed row but no fixed column.When the form loads i want to place checkboxes in the first column of all the rows.The user should be able to select multiple rows in the flexgrid .When they select multiple rows the checkboxes in those rows should also get checked.Can anyone send me a sample code for the same?
Thanks in advance
Thanks in advance
Add Grid.FixedCols = 0 to Form_Load event.
ASKER
Hi dbrckovi
i tried the sample which you provided.The checkboxes are not getting displayed at all in the grid.
i tried the sample which you provided.The checkboxes are not getting displayed at all in the grid.
I have tried the same example I posted, step by step as I described and it works fine.
Maybe checkboxes are displayed behind flex grid. (Although, Check(X).ZOrder (0) ensures that they are moved to front)
Try changing the line: Check(X).Left = Grid.Left + 200
to: Check(X).Left = grid.Left - 300
in Form_Load.
This will display them on the left side of grid.
Are you using VB.NET ?
I think VB.NET doesn't support Load to create new instances of controls.
I'm using VB6 and everything works.
Maybe checkboxes are displayed behind flex grid. (Although, Check(X).ZOrder (0) ensures that they are moved to front)
Try changing the line: Check(X).Left = Grid.Left + 200
to: Check(X).Left = grid.Left - 300
in Form_Load.
This will display them on the left side of grid.
Are you using VB.NET ?
I think VB.NET doesn't support Load to create new instances of controls.
I'm using VB6 and everything works.
ASKER CERTIFIED SOLUTION
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On an empty form create a checkbox, rename it to "Check", set its index to 0, and make it invisible.
Create Msflexgrid, and rename it to "Grid".
Paste this code, and run it:
--------------------------
Dim RowSelected() As Boolean
Dim NumberOfCheckBoxes As Integer
Private Sub Check_Click(Index As Integer)
If Check(Index).Value = 1 Then RowSelected(Index + Grid.TopRow - 1) = True
If Check(Index).Value = 0 Then RowSelected(Index + Grid.TopRow - 1) = False
End Sub
Private Sub Form_Load()
Grid.FixedRows = 1
Grid.Cols = 5
Grid.Rows = 30
Grid.ScrollTrack = True
ReDim RowSelected(Grid.Rows) As Boolean
For X = 1 To Grid.Rows - 1
If Grid.RowIsVisible(X) = True Then
Load Check(X)
NumberOfCheckBoxes = X
Check(X).Visible = True
Check(X).Left = Grid.Left + 200
Check(X).Top = Grid.RowPos(X) + Grid.Top + 50
Check(X).ZOrder (0)
End If
Next X
End Sub
Private Sub Grid_Click()
Dim ClickedRow As Integer
RowSelected(Grid.MouseRow)
Call UpdateCheckboxes
End Sub
Sub UpdateCheckboxes()
For X = Grid.TopRow To Grid.TopRow + NumberOfCheckBoxes - 1
If RowSelected(X) = True Then
Check(X - Grid.TopRow + 1).Value = 1
Else
Check(X - Grid.TopRow + 1).Value = 0
End If
Next X
End Sub
Private Sub Grid_Scroll()
Call UpdateCheckboxes
End Sub
--------------------------
Theory behind this is following:
Steps:
- Adjust the grid properties to your needs.
- Create several checkboxes, so every visible row has one checkbox, position them where you want and make them visible.
- When clicked on checkbox, calculate for which row it is currently assigned, and update the according array element (RowIsSelected(x))
- When Grid is clicked, update the accordig array element (RowIsSelected), and update the checkboxes
- When Grid is scrolled, just update the checkboxes
Now in order to see if a row is selected, use If RowIsSelected(Desired_Row)