debug exception handling, beginning of a custom tree view

CreamInstaller/Forms/Components/CustomTreeView.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+using System.Windows.Forms.VisualStyles;
+
+namespace CreamInstaller
+{
+    public class CustomTreeView : TreeView
+    {
+        protected override void WndProc(ref Message m)
+        {
+            if (m.Msg == 0x203) m.Result = IntPtr.Zero;
+            else base.WndProc(ref m);
+        }
+
+        public CustomTreeView() : base()
+        {
+            //DrawMode = TreeViewDrawMode.OwnerDrawAll;
+            //DrawNode += new DrawTreeNodeEventHandler(DrawTreeNode);
+
+            closedGlyphRenderer = new(VisualStyleElement.TreeView.Glyph.Closed);
+            openedGlyphRenderer = new(VisualStyleElement.TreeView.Glyph.Opened);
+        }
+
+        private readonly VisualStyleRenderer closedGlyphRenderer;
+        private readonly VisualStyleRenderer openedGlyphRenderer;
+
+        private void DrawTreeNode(object sender, DrawTreeNodeEventArgs e)
+        {
+            if (!e.Node.IsVisible) return;
+            e.Graphics.FillRectangle(new SolidBrush(BackColor), e.Bounds);
+
+            int startX = e.Bounds.X + (e.Node.Parent is null ? 22 : 41);
+            int startY = e.Bounds.Y;
+
+            if (e.Node.Parent is null && e.Node.Nodes.Count > 0)
+                if (e.Node.IsExpanded)
+                    openedGlyphRenderer.DrawBackground(e.Graphics, new(e.Bounds.X + startX / 2 - 8, startY, 16, 16));
+                else
+                    closedGlyphRenderer.DrawBackground(e.Graphics, new(e.Bounds.X + startX / 2 - 8, startY, 16, 16));
+
+            CheckBoxState checkBoxState = e.Node.TreeView.Enabled
+                    ? (e.Node.Checked ? CheckBoxState.CheckedNormal : CheckBoxState.UncheckedNormal)
+                    : (e.Node.Checked ? CheckBoxState.CheckedDisabled : CheckBoxState.UncheckedDisabled);
+            CheckBoxRenderer.DrawCheckBox(e.Graphics, new(startX, startY + 1), checkBoxState);
+
+            TextRenderer.DrawText(e.Graphics, e.Node.Text, e.Node.NodeFont, e.Node.Bounds.Location, Color.Black);
+        }
+    }
+}

CreamInstaller/Forms/Components/ProgramSelectionTreeView.cs

@@ -1,14 +0,0 @@
-using System;
-using System.Windows.Forms;
-
-namespace CreamInstaller
-{
-    public class ProgramSelectionTreeView : TreeView
-    {
-        protected override void WndProc(ref Message m)
-        {
-            if (m.Msg == 0x203) m.Result = IntPtr.Zero;
-            else base.WndProc(ref m);
-        }
-    }
-}

CreamInstaller/Forms/MainForm.Designer.cs

@@ -36,7 +36,7 @@ namespace CreamInstaller
             this.updateButton = new System.Windows.Forms.Button();
             this.ignoreButton = new System.Windows.Forms.Button();
             this.progressBar1 = new System.Windows.Forms.ProgressBar();
-            this.changelogTreeView = new CreamInstaller.ProgramSelectionTreeView();
+            this.changelogTreeView = new CreamInstaller.CustomTreeView();
             this.SuspendLayout();
             // 
             // label1
@@ -116,7 +116,7 @@ namespace CreamInstaller
         private Button updateButton;
         private Button ignoreButton;
         private ProgressBar progressBar1;
-        private ProgramSelectionTreeView changelogTreeView;
+        private CustomTreeView changelogTreeView;
     }
 }
 

CreamInstaller/Forms/SelectForm.Designer.cs

@@ -36,7 +36,7 @@ namespace CreamInstaller
             this.label1 = new System.Windows.Forms.Label();
             this.groupBox1 = new System.Windows.Forms.GroupBox();
             this.noneFoundLabel = new System.Windows.Forms.Label();
-            this.treeView1 = new CreamInstaller.ProgramSelectionTreeView();
+            this.treeView1 = new CreamInstaller.CustomTreeView();
             this.allCheckBox = new System.Windows.Forms.CheckBox();
             this.progressBar1 = new System.Windows.Forms.ProgressBar();
             this.label2 = new System.Windows.Forms.Label();
@@ -201,7 +201,7 @@ namespace CreamInstaller
         private System.Windows.Forms.CheckBox allCheckBox;
         private Button scanButton;
         private Label noneFoundLabel;
-        private ProgramSelectionTreeView treeView1;
+        private CustomTreeView treeView1;
     }
 }
 

CreamInstaller/Forms/SelectForm.cs

@@ -325,10 +325,7 @@ namespace CreamInstaller
                     selection.ToggleAllDlc(e.Node.Checked);
                     e.Node.Nodes.Cast<TreeNode>().ToList().ForEach(treeNode => treeNode.Checked = e.Node.Checked);
                 }
-                else
+                else selection.Enabled = e.Node.Checked;
-                {
-                    selection.Enabled = e.Node.Checked;
-                }
                 allCheckBox.CheckedChanged -= OnAllCheckBoxChanged;
                 allCheckBox.Checked = treeNodes.TrueForAll(treeNode => treeNode.Checked);
                 allCheckBox.CheckedChanged += OnAllCheckBoxChanged;

CreamInstaller/Program.cs

@@ -28,7 +28,16 @@ namespace CreamInstaller
                 Application.EnableVisualStyles();
                 Application.SetCompatibleTextRenderingDefault(false);
                 Application.ApplicationExit += new(OnApplicationExit);
-                Application.Run(new MainForm());
+            retry:
+                try
+                {
+                    Application.Run(new MainForm());
+                }
+                catch (Exception e)
+                {
+                    if (ExceptionHandler.OutputException(e)) goto retry;
+                    Application.Exit();
+                }
             }
             mutex.Close();
         }