Clean up folder structure a bit, move .NET 3rdparty under renderdocui/

2026-05-29 21:30:53 +00:00 · 2015-04-13 12:46:30 +01:00
parent b41b5242d1
commit f06964ea23
104 changed files with 17 additions and 16 deletions
@@ -0,0 +1,69 @@
+using System;
+using System.Windows.Forms;
+
+namespace WeifenLuo.WinFormsUI.Docking
+{
+    // Inspired by Chris Sano's article:
+    // http://msdn.microsoft.com/smartclient/default.aspx?pull=/library/en-us/dnwinforms/html/colorpicker.asp
+    // In Sano's article, the DragForm needs to meet the following criteria:
+    // (1) it was not to show up in the task bar;
+    //     ShowInTaskBar = false
+    // (2) it needed to be the top-most window;
+    //     TopMost = true
+    // (3) its icon could not show up in the ALT+TAB window if the user pressed ALT+TAB during a drag-and-drop;
+    //     FormBorderStyle = FormBorderStyle.None;
+    //     Create with WS_EX_TOOLWINDOW window style.
+    //     Compares with the solution in the artile by setting FormBorderStyle as FixedToolWindow,
+    //     and then clip the window caption and border, this way is much simplier.
+    // (4) it was not to steal focus from the application when displayed.
+    //     User Win32 ShowWindow API with SW_SHOWNOACTIVATE
+    // In addition, this form should only for display and therefore should act as transparent, otherwise
+    // WindowFromPoint will return this form, instead of the control beneath. Need BOTH of the following to
+    // achieve this (don't know why, spent hours to try it out :( ):
+    //  1. Enabled = false;
+    //  2. WM_NCHITTEST returns HTTRANSPARENT
+    internal class DragForm : Form
+    {
+        public DragForm()
+        {
+            FormBorderStyle = FormBorderStyle.None;
+            ShowInTaskbar = false;
+            SetStyle(ControlStyles.Selectable, false);
+            Enabled = false;
+            TopMost = true;
+        }
+
+        protected override CreateParams CreateParams
+        {
+            get
+            {
+                CreateParams createParams = base.CreateParams;
+                createParams.ExStyle |= (int)(Win32.WindowExStyles.WS_EX_NOACTIVATE | Win32.WindowExStyles.WS_EX_TOOLWINDOW);
+                return createParams;
+            }
+        }
+
+        protected override void WndProc(ref Message m)
+        {
+            if (m.Msg == (int)Win32.Msgs.WM_NCHITTEST)
+            {
+                m.Result = (IntPtr)Win32.HitTest.HTTRANSPARENT;
+                return;
+            }
+
+            base.WndProc(ref m);
+        }
+        //The form can be still activated by explicity calling Activate
+        protected override bool ShowWithoutActivation
+        {
+            get { return true; }
+        }
+        public virtual void Show(bool bActivate)
+        {
+                Show();
+
+                if (bActivate)
+                    Activate();
+        }
+    }
+}