Initial winforms content migrated (#18)

* Merge winforms framework content to working branch (#14) * Breadcrumb / TOC / Move net5 to net folder (#15) * change path from net5 to net * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Mess with bread/toc * Add .net 5 winforms placeholder article (#16) * added some metadata and adjusted net5 placeholder * corrections * corrections * corrections * Test1 * Swapping landing page vs concept * fix links * Fix links * Fix desc
2026-09-06 16:06:07 +02:00 · 2020-09-01 16:26:21 -07:00
parent 1a27c9b107
commit c0ba284473
1557 changed files with 129980 additions and 13 deletions
@@ -0,0 +1,54 @@
+Imports System.Drawing
+Imports System.Threading
+Imports System.Windows.Forms
+
+Public Class InvokeThreadSafeForm : Inherits Form
+
+    Public Shared Sub Main()
+        Application.SetCompatibleTextRenderingDefault(False)
+        Application.EnableVisualStyles()
+        Dim frm As New InvokeThreadSafeForm()
+        Application.Run(frm)
+    End Sub
+
+    Dim WithEvents Button1 As Button
+    Dim TextBox1 As TextBox
+    Dim Thread2 as Thread = Nothing
+
+    Delegate Sub SafeCallDelegate(text As String)
+
+    Private Sub New()
+        Button1 = New Button()
+        With Button1
+            .Location = New Point(15, 55)
+            .Size = New Size(240, 20)
+            .Text = "Set text safely"
+        End With
+        TextBox1 = New TextBox()
+        With TextBox1
+            .Location = New Point(15, 15)
+            .Size = New Size(240, 20)
+        End With
+        Controls.Add(Button1)
+        Controls.Add(TextBox1)
+    End Sub
+
+    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
+        Thread2 = New Thread(New ThreadStart(AddressOf SetText))
+        Thread2.Start()
+        Thread.Sleep(1000)
+    End Sub
+
+    Private Sub WriteTextSafe(text As String)
+        If TextBox1.InvokeRequired Then
+            Dim d As New SafeCallDelegate(AddressOf SetText)
+            TextBox1.Invoke(d, New Object() {text})
+        Else
+            TextBox1.Text = text
+        End If
+    End Sub
+
+    Private Sub SetText()
+        WriteTextSafe("This text was set safely.")
+    End Sub
+End Class