Initial partial creation of cancel logic

This code eventually will be used to allow the user to cancel waiting for the game/app. This won't work at the moment though as we actually monitor for the game on the UI thread (a big no no). I'll have to fix this in an upcoming update, but for now we'll leave it here.

DisplayMagician/ShortcutRepository.cs

@@ -31,6 +31,7 @@ namespace DisplayMagician
         //public static Dictionary<string, bool> _shortcutWarningLookup = new Dictionary<string, bool>();
         //public static Dictionary<string, bool> _shortcutErrorLookup = new Dictionary<string, bool>();
         private static bool _shortcutsLoaded = false;
+        private static bool _cancelWait = false;
         // Other constants that are useful
         private static string AppShortcutStoragePath = Path.Combine(Program.AppDataPath, $"Shortcuts");
         private static string _shortcutStorageJsonFileName = Path.Combine(AppShortcutStoragePath, $"Shortcuts_{Version.ToString(2)}.json");
@@ -97,6 +98,11 @@ namespace DisplayMagician
             get => new Version(1, 0, 0);
         }
 
+        public static bool CancelWait {
+            get => _cancelWait;
+            set => _cancelWait = value;
+        }
+
         #endregion
 
         #region Class Methods
@@ -1448,9 +1454,15 @@ namespace DisplayMagician
                                         break;
                                     }
 
+                                    if (_cancelWait)
+                                    {
+                                        logger.Debug($"ShortcutRepository/RunShortcut: User requested we stop waiting. Exiting loop while waiting for {gameLibraryToUse.GameLibraryName} Game {gameToRun.Name} to close.");
+                                        break;
+                                    }
+
                                     // Send a message to windows so that it doesn't think
                                     // we're locked and try to kill us
-                                    System.Threading.Thread.CurrentThread.Join(0);
+                                    Thread.CurrentThread.Join(0);
                                     Thread.Sleep(1000);
                                 }
                                 logger.Debug($"ShortcutRepository/RunShortcut: {gameLibraryToUse.GameLibraryName} Game {gameToRun.Name} has exited.");
@@ -1511,9 +1523,17 @@ namespace DisplayMagician
                                     break;
                                 }
 
+                                if (_cancelWait)
+                                {
+                                    logger.Debug($"ShortcutRepository/RunShortcut: User requested we stop waiting. Exiting loop while waiting for {gameLibraryToUse.GameLibraryName} Game {gameToRun.Name} to close.");
+                                    break;
+                                }
+
+
                                 // Send a message to windows so that it doesn't think
                                 // we're locked and try to kill us
-                                System.Threading.Thread.CurrentThread.Join(0);
+                                Thread.CurrentThread.Join(0);
+                                // Pause for a second
                                 Thread.Sleep(1000);
                             }
                             logger.Debug($"ShortcutRepository/RunShortcut: Alternative Game Executable {altGameProcessToMonitor} has exited.");
@@ -1635,9 +1655,15 @@ namespace DisplayMagician
                                     break;
                                 }
 
+                                if (_cancelWait)
+                                {
+                                    logger.Debug($"ShortcutRepository/RunShortcut: User requested we stop waiting. Exiting loop while waiting for {gameLibraryToUse.GameLibraryName} Game {gameToRun.Name} to close.");
+                                    break;
+                                }
+
                                 // Send a message to windows so that it doesn't think
                                 // we're locked and try to kill us
-                                System.Threading.Thread.CurrentThread.Join(0);
+                                Thread.CurrentThread.Join(0);
                                 Thread.Sleep(1000);
                             }
                             logger.Debug($"ShortcutRepository/RunShortcut: {gameLibraryToUse.GameLibraryName} Game {gameToRun.Name} has exited.");

DisplayMagician/UIForms/ShortcutLibraryForm.Designer.cs

@@ -246,7 +246,7 @@
             this.tsmi_delete.Text = "Delete Shortcut...";
             this.tsmi_delete.Click += new System.EventHandler(this.tsmi_delete_Click);
             // 
-            // lbl_masked_form
+            // lbl_mask
             // 
             this.lbl_mask.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
             | System.Windows.Forms.AnchorStyles.Left) 
@@ -255,7 +255,7 @@
             this.lbl_mask.Font = new System.Drawing.Font("Microsoft Sans Serif", 16F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.lbl_mask.ForeColor = System.Drawing.Color.White;
             this.lbl_mask.Location = new System.Drawing.Point(360, 306);
-            this.lbl_mask.Name = "lbl_masked_form";
+            this.lbl_mask.Name = "lbl_mask";
             this.lbl_mask.Size = new System.Drawing.Size(415, 104);
             this.lbl_mask.TabIndex = 33;
             this.lbl_mask.Text = "lbl_masked_form";
@@ -289,6 +289,7 @@
             this.Text = "DisplayMagician - Game Shortcuts";
             this.Activated += new System.EventHandler(this.ShortcutLibraryForm_Activated);
             this.Load += new System.EventHandler(this.ShortcutLibraryForm_Load);
+            this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.ShortcutLibraryForm_KeyPress);
             this.cms_shortcuts.ResumeLayout(false);
             this.ResumeLayout(false);
             this.PerformLayout();

DisplayMagician/UIForms/ShortcutLibraryForm.cs

@@ -468,5 +468,17 @@ namespace DisplayMagician.UIForms
         {
             btn_delete.PerformClick();
         }
+
+        private void ShortcutLibraryForm_KeyPress(object sender, KeyPressEventArgs e)
+        {
+            if (lbl_mask.Visible == true)
+            {
+                if (e.KeyChar == 27)
+                {
+                    // We set the CancelWait to be true on ShortcutRespository, and it will be picked up bythe shortcut check.
+                    ShortcutRepository.CancelWait = true;
+                }
+            }
+        }
     }
 }