转发 Option Explicit'variable to hold the width of the spltter bar Private Const SPLT_WDTH As Integer = 3'variable to hold the last-sized postion Private currSplitPosX As Long'variable to hold the horizontal and vertical offsets of the 2 controls Dim CTRL_OFFSET As Integer'variable to hold the Splitter bar colour Dim SPLT_COLOUR As Long Private Sub Form_Load() 'set the startup variablesCTRL_OFFSET = 5 SPLT_COLOUR = &H808080'set the current splitter bar position to an arbitrary value that will always be outside 'the possibe range. This allows us to check for movement of the spltter bar in subsequent 'mousexxx subs.currSplitPosX = &H7FFFFFFFListLeft.AddItem "Left list Item 1" ListLeft.AddItem "Left list Item 2" ListLeft.AddItem "Left list Item 3" ListLeft.AddItem "Left list Item 4" ListLeft.AddItem "Left list Item 5"'note: VB3 users will need to substitute Chr$(13) & chr$(10) for the VB4 constant vbCrLf in the sentence below.TextRight = "This code demonstrates how to implement a spliiter bar in a Visual Basic Project." & vbCrLf & vbCrLf & "It's actions are controlled through the MouseDown, MouseMove and MouseUp subs of the Splitter Picturebox, and the Resize event of the form."End Sub Private Sub Form_Resize()Dim x1 As Integer Dim x2 As Integer Dim height1 As Integer Dim width1 As Integer Dim width2 As IntegerOn Error Resume Next'set the height of the controlsheight1 = ScaleHeight - (CTRL_OFFSET * 2) x1 = CTRL_OFFSET width1 = ListLeft.Widthx2 = x1 + ListLeft.Width + SPLT_WDTH - 1 width2 = ScaleWidth - x2 - CTRL_OFFSET'move the left list ListLeft.Move x1% - 1, CTRL_OFFSET, width1, height1'move the right list TextRight.Move x2, CTRL_OFFSET, width2 + 1, height1'move the splitter bar Splitter.Move x1 + ListLeft.Width - 1, CTRL_OFFSET, SPLT_WDTH, height1End SubPrivate Sub Splitter_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)If Button = vbLeftButton Then 'change the splitter colour Splitter.BackColor = SPLT_COLOUR
'set the current position to x currSplitPosX = CLng(X) Else 'not the left button, so... if the current position <> default, cause a mouseup If currSplitPosX <> &H7FFFFFFF Then Splitter_MouseUp Button, Shift, X, Y
'set the current position to the default value currSplitPosX = &H7FFFFFFF End IfEnd Sub Private Sub Splitter_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) 'if the splitter has been moved... If currSplitPosX& <> &H7FFFFFFF Then'if the current position <> default, reposition the splitter and set this as the current value If CLng(X) <> currSplitPosX Then Splitter.Move Splitter.Left + X, CTRL_OFFSET, SPLT_WDTH, ScaleHeight - (CTRL_OFFSET * 2) currSplitPosX = CLng(X)End IfEnd IfEnd Sub Private Sub Splitter_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)'if the splitter has been moved... If currSplitPosX <> &H7FFFFFFF Then 'if the current postition <> the last position do a final move of the splitter If CLng(X) <> currSplitPosX Then Splitter.Move Splitter.Left + X, CTRL_OFFSET, SPLT_WDTH, ScaleHeight - (CTRL_OFFSET * 2) End If'call this the default position currSplitPosX = &H7FFFFFFF'restore the normal splitter colour Splitter.BackColor = &H8000000F'and check for valid sizings. 'Either enforce the default minimum & maximum widths for the left list, or, if within range, set the widthIf Splitter.Left > 60 And Splitter.Left < (ScaleWidth - 60) ThenListLeft.Width = Splitter.Left - ListLeft.Left 'the pane is within range ElseIf Splitter.Left < 60 Then 'the pane is too small ListLeft.Width = 60 Else ListLeft.Width = ScaleWidth - 60 'the pane is too wide End If 'reposition both lists, and the splitter bar Form_Resize End IfEnd Sub
Option Explicit'variable to hold the width of the spltter bar
Private Const SPLT_WDTH As Integer = 3'variable to hold the last-sized postion
Private currSplitPosX As Long'variable to hold the horizontal and vertical offsets of the 2 controls
Dim CTRL_OFFSET As Integer'variable to hold the Splitter bar colour
Dim SPLT_COLOUR As Long
Private Sub Form_Load()
'set the startup variablesCTRL_OFFSET = 5
SPLT_COLOUR = &H808080'set the current splitter bar position to an arbitrary value that will always be outside
'the possibe range. This allows us to check for movement of the spltter bar in subsequent
'mousexxx subs.currSplitPosX = &H7FFFFFFFListLeft.AddItem "Left list Item 1"
ListLeft.AddItem "Left list Item 2"
ListLeft.AddItem "Left list Item 3"
ListLeft.AddItem "Left list Item 4"
ListLeft.AddItem "Left list Item 5"'note: VB3 users will need to substitute Chr$(13) & chr$(10) for the VB4 constant vbCrLf in the sentence below.TextRight = "This code demonstrates how to implement a spliiter bar in a Visual Basic Project." & vbCrLf & vbCrLf & "It's actions are controlled through the MouseDown, MouseMove and MouseUp subs of the Splitter Picturebox, and the Resize event of the form."End Sub
Private Sub Form_Resize()Dim x1 As Integer
Dim x2 As Integer
Dim height1 As Integer
Dim width1 As Integer
Dim width2 As IntegerOn Error Resume Next'set the height of the controlsheight1 = ScaleHeight - (CTRL_OFFSET * 2)
x1 = CTRL_OFFSET
width1 = ListLeft.Widthx2 = x1 + ListLeft.Width + SPLT_WDTH - 1
width2 = ScaleWidth - x2 - CTRL_OFFSET'move the left list
ListLeft.Move x1% - 1, CTRL_OFFSET, width1, height1'move the right list
TextRight.Move x2, CTRL_OFFSET, width2 + 1, height1'move the splitter bar
Splitter.Move x1 + ListLeft.Width - 1, CTRL_OFFSET, SPLT_WDTH, height1End SubPrivate Sub Splitter_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)If Button = vbLeftButton Then
'change the splitter colour
Splitter.BackColor = SPLT_COLOUR
'set the current position to x
currSplitPosX = CLng(X)
Else
'not the left button, so... if the current position <> default, cause a mouseup
If currSplitPosX <> &H7FFFFFFF Then Splitter_MouseUp Button, Shift, X, Y
'set the current position to the default value
currSplitPosX = &H7FFFFFFF
End IfEnd Sub
Private Sub Splitter_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
'if the splitter has been moved...
If currSplitPosX& <> &H7FFFFFFF Then'if the current position <> default, reposition the splitter and set this as the current value
If CLng(X) <> currSplitPosX Then
Splitter.Move Splitter.Left + X, CTRL_OFFSET, SPLT_WDTH, ScaleHeight - (CTRL_OFFSET * 2)
currSplitPosX = CLng(X)End IfEnd IfEnd Sub
Private Sub Splitter_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)'if the splitter has been moved...
If currSplitPosX <> &H7FFFFFFF Then
'if the current postition <> the last position do a final move of the splitter
If CLng(X) <> currSplitPosX Then
Splitter.Move Splitter.Left + X, CTRL_OFFSET, SPLT_WDTH, ScaleHeight - (CTRL_OFFSET * 2)
End If'call this the default position
currSplitPosX = &H7FFFFFFF'restore the normal splitter colour
Splitter.BackColor = &H8000000F'and check for valid sizings.
'Either enforce the default minimum & maximum widths for the left list, or, if within range, set the widthIf Splitter.Left > 60 And Splitter.Left < (ScaleWidth - 60) ThenListLeft.Width = Splitter.Left - ListLeft.Left 'the pane is within range
ElseIf Splitter.Left < 60 Then 'the pane is too small
ListLeft.Width = 60
Else
ListLeft.Width = ScaleWidth - 60 'the pane is too wide
End If
'reposition both lists, and the splitter bar
Form_Resize
End IfEnd Sub