From 25c9704ef1ec8fc0cad49a969e2ac0fe944f95a7 Mon Sep 17 00:00:00 2001
From: Konstantina Chremmou <Konstantina.Chremmou@cloud.com>
Date: Mon, 20 Nov 2023 10:43:33 +0000
Subject: [PATCH] Allow splash screen to move.

Signed-off-by: Konstantina Chremmou <Konstantina.Chremmou@cloud.com>
---
 XenAdmin/SplashScreen.Designer.cs |  2 ++
 XenAdmin/SplashScreen.cs          | 20 ++++++++++++++++++++
 XenCenterLib/Win32.cs             | 12 ++++++++++--
 3 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/XenAdmin/SplashScreen.Designer.cs b/XenAdmin/SplashScreen.Designer.cs
index c264a8b3a..88e1bf5d8 100644
--- a/XenAdmin/SplashScreen.Designer.cs
+++ b/XenAdmin/SplashScreen.Designer.cs
@@ -41,6 +41,7 @@ private void InitializeComponent()
             resources.ApplyResources(this.pictureBox1, "pictureBox1");
             this.pictureBox1.Name = "pictureBox1";
             this.pictureBox1.TabStop = false;
+            this.pictureBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);
             // 
             // timer1
             // 
@@ -52,6 +53,7 @@ private void InitializeComponent()
             this.labelCopyright.BackColor = System.Drawing.Color.Transparent;
             resources.ApplyResources(this.labelCopyright, "labelCopyright");
             this.labelCopyright.Name = "labelCopyright";
+            this.labelCopyright.MouseDown += new System.Windows.Forms.MouseEventHandler(this.labelCopyright_MouseDown);
             // 
             // SplashScreen
             // 
diff --git a/XenAdmin/SplashScreen.cs b/XenAdmin/SplashScreen.cs
index 00d2376d1..fc22f663e 100644
--- a/XenAdmin/SplashScreen.cs
+++ b/XenAdmin/SplashScreen.cs
@@ -32,6 +32,7 @@
 using System.Drawing;
 using System.Windows.Forms;
 using XenAdmin.Core;
+using XenCenterLib;
 
 namespace XenAdmin
 {
@@ -67,5 +68,24 @@ private void timer1_Tick(object sender, EventArgs e)
             timer1.Stop();
             ShowMainWindowRequested?.Invoke();
         }
+
+        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
+        {
+            SendToForm(e.Button);
+        }
+
+        private void labelCopyright_MouseDown(object sender, MouseEventArgs e)
+        {
+            SendToForm(e.Button);
+        }
+
+        private void SendToForm(MouseButtons mouseButton)
+        {
+            if (mouseButton == MouseButtons.Left)
+            {
+                Win32.ReleaseCapture();
+                Win32.SendMessage(Handle, Win32.WM_NCLBUTTONDOWN, Win32.HT_CAPTION, 0);
+            }
+        }
     }
 }
diff --git a/XenCenterLib/Win32.cs b/XenCenterLib/Win32.cs
index 759763c8e..c39507e58 100644
--- a/XenCenterLib/Win32.cs
+++ b/XenCenterLib/Win32.cs
@@ -101,6 +101,8 @@ public static extern int ToUnicode(uint wVirtKey, uint wScanCode, IntPtr lpKeySt
         public const int WM_KEYDOWN = 0x100;
 
         // Mouse Hooks
+        public const int WM_NCLBUTTONDOWN = 0xA1;
+        public const int HT_CAPTION = 0x2;
         public const int WM_LBUTTONDOWN = 0x201;
         public const int WM_LBUTTONDBLCLK = 0x203;
         public const int WM_MOUSEWHEEL = 0x20A;
@@ -186,11 +188,17 @@ public struct POINT
         [DllImport("user32.dll")]
         public static extern bool DestroyWindow(IntPtr hwnd);
 
+        [DllImport("user32.dll")]
+        public static extern bool ReleaseCapture();
+
+        [DllImport("user32.dll")]
+        public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);
+
         [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
-        public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
+        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);
 
         [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
-        public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam);
+        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, string lParam);
 
         [DllImport("user32.dll")]
         public static extern IntPtr SetFocus(IntPtr hwnd);