使用文本框添加我動態創建的數字，例如表單中的 5 個圖片框，如下所示：
Sub CreateImages()
Dim pb As New PictureBox
Dim i As Integer = TextBoxNumberImages.Text
Dim Z As Integer = 10
pb.Top = 50
pb.Left = 50
pb.Tag = Color.Black
pb.BackColor = Color.Red
For i = 1 To i
pb = New PictureBox
pb.Width = 120
pb.Height = 330
pb.Left = Z
pb.Tag = False
pb.Name = "Image" Str(i)
pb.BorderStyle = BorderStyle.FixedSingle
pb.BackColor = Color.Green
AddHandler pb.Click, AddressOf _Click
Me.Controls.Add(pb)
pb.Refresh()
Z = 125
Next
End Sub
然后，在創建圖片框后，單擊每個..使用AddHandler pb.Click, AddressOf _Click我獲得焦點和 3 個按鈕來處理當前的圖片框（只需增加/減少或切成兩部分），代碼如下：
Public Sub _Click(ByVal sender As Object, ByVal e As EventArgs)
Dim pb As PictureBox = DirectCast(sender, PictureBox)
Dim selected As Boolean = DirectCast(pb.Tag, Boolean)
Dim d As Integer
For d = 1 To TextBoxNumberImages.Text
If pb.Name = "Image" Str(d) Then
NOMEPIC = pb.Name
pb.BackColor = Color.Blue
' MsgBox(pb.Location.X & "X")
' MsgBox(pb.Location.Y & "Y")
BtnAdd.Top = pb.Location.Y 330
BtnAdd.Left = pb.Location.X
BtnSub.Top = pb.Location.Y 330
BtnSub.Left = pb.Location.X 40
BtnNew.Top = pb.Location.Y 330
BtnNew.Left = pb.Location.X 80
Label1.Top = pb.Location.Y 360
Label1.Left = pb.Location.X
Label1.Text = "Art. " & d
txtArt.Top = pb.Location.Y 380
txtArt.Left = pb.Location.X
End If
Next
BtnAdd.Visible = True
BtnSub.Visible = True
BtnNew.Visible = True
Label1.Visible = True
txtArt.Visible = True
pb.Refresh()
現在我想通過 3 個按鈕來管理它們（“ ”增大尺寸“-”減小尺寸 e 切...）但我不知道如何使圖片框聚焦（涉及）。
uj5u.com熱心網友回復：
只需持有對上次點擊的圖片框的參考，然后在按鈕處理程式中對其進行操作
Private selectedPictureBox As PictureBox
Private Sub _Click(sender As Object, e As EventArgs)
selectedPictureBox = DirectCast(sender, PictureBox)
' ...
End Sub
Private Sub btnAdd_Click(sender As Object, e As EventArgs) Handles btnAdd.Click
If selectedPictureBox Is Nothing Then Exit Sub
selectedPictureBox.Width = 1
selectedPictureBox.Height = 1
End Sub
Private Sub btnSub_Click(sender As Object, e As EventArgs) Handles btnSub.Click
If selectedPictureBox Is Nothing Then Exit Sub
selectedPictureBox.Width -= 1
selectedPictureBox.Height -= 1
End Sub
轉載請註明出處，本文鏈接：https://www.uj5u.com/yidong/378926.html
標籤：网络