#1904 Unable to minimize ImageGlass

Source/Components/ImageGlass.Settings/Forms/ToolForm.cs

@@ -68,16 +68,20 @@ public partial class ToolForm : ThemedForm
 
     protected override bool ShowWithoutActivation => true;
 
+
     protected override CreateParams CreateParams
     {
         get
         {
-            CreateParams baseParams = base.CreateParams;
+            var cp = base.CreateParams;
 
             const int WS_EX_NOACTIVATE = 0x08000000;
-            baseParams.ExStyle |= WS_EX_NOACTIVATE;
+            const int WS_MINIMIZEBOX = 0x20000;
+
+            cp.ExStyle |= WS_EX_NOACTIVATE;
+            cp.Style ^= WS_MINIMIZEBOX; // hide Minimize box
 
-            return baseParams;
+            return cp;
         }
     }
 

Source/Components/ImageGlass.UI/Forms/ModernForm.cs

@@ -162,6 +162,27 @@ public ModernForm()
     // Protected / virtual methods
     #region Protected / virtual methods
 
+    protected override CreateParams CreateParams
+    {
+        get
+        {
+            // ensure that when in full-screen or frameless mode we can still use the 
+            // Windows shortcut keys to minimize, and allow the taskbar icon to minimize
+            // the window.
+            // ref https://www.fluxbytes.com/csharp/minimize-a-form-without-border-using-the-taskbar/
+
+            const int WS_MINIMIZEBOX = 0x20000;
+            const int CS_DBLCLKS = 0x8;
+
+            var cp = base.CreateParams;
+            cp.Style |= WS_MINIMIZEBOX;
+            cp.ClassStyle |= CS_DBLCLKS;
+
+            return cp;
+        }
+    }
+
+
     protected override void WndProc(ref Message m)
     {
         // WM_SYSCOMMAND

Source/ImageGlass/FrmMain.cs

@@ -441,7 +441,6 @@ public async Task PrepareLoadingAsync(string[] paths, string? currentFile = null
         }
     }
 
-
     /// <summary>
     /// Load the images list.
     /// </summary>