Window handling

VAR.Toolbox/UI/FrmToolbox.Designer.cs

@@ -75,6 +75,8 @@
             this.MaximizeBox = false;
             this.Name = "FrmToolbox";
             this.Text = "Toolbox";
+            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.FrmToolbox_FormClosing);
+            this.Resize += new System.EventHandler(this.FrmToolbox_Resize);
             this.ResumeLayout(false);
 
         }

VAR.Toolbox/UI/FrmToolbox.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Windows.Forms;
 
 namespace VAR.Toolbox.UI
@@ -12,20 +13,71 @@ namespace VAR.Toolbox.UI
 
         private void btnBase64_Click(object sender, EventArgs e)
         {
-            var frmBase64 = new FrmBase64();
-            frmBase64.Show();
+            CreateWindow(typeof(FrmBase64));
         }
 
         private void btnProxyCmd_Click(object sender, EventArgs e)
         {
-            var frmProxyCmd = new FrmProxyCmd();
-            frmProxyCmd.Show();
+            CreateWindow(typeof(FrmProxyCmd));
         }
 
         private void btnWebcam_Click(object sender, EventArgs e)
         {
-            var frmWebcam = new FrmWebcam();
-            frmWebcam.Show();
+            CreateWindow(typeof(FrmWebcam));
         }
+
+        #region Window handling
+
+        private Form CreateWindow(Type type)
+        {
+            Form frm = Activator.CreateInstance(type) as Form;
+            if(frm== null)
+            {
+                return null;
+            }
+            _forms.Add(frm);
+            frm.FormClosing += frmChild_FormClosing;
+            frm.Show();
+            return frm;
+        }
+        
+        private List<Form> _forms = new List<Form>();
+
+        private void frmChild_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            _forms.Remove((Form)sender);
+        }
+
+        private void FrmToolbox_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            while (_forms.Count > 0)
+            {
+                _forms[0].Close();
+            }
+        }
+
+        private bool _wasMinimized = false;
+
+        private void FrmToolbox_Resize(object sender, EventArgs e)
+        {
+            if (FormWindowState.Minimized == WindowState)
+            {
+                _wasMinimized = true;
+                foreach(Form frm in _forms)
+                {
+                    frm.Hide();
+                }
+            }
+            if (FormWindowState.Normal == WindowState && _wasMinimized)
+            {
+                _wasMinimized = false;
+                foreach (Form frm in _forms)
+                {
+                    frm.Show();
+                }
+            }
+        }
+
+        #endregion Window handling
     }
 }