DesignerForm.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / Design / DesignerForm.cs / 1305376 / DesignerForm.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.Design.MobileControls { 
 
    using System;
    using System.Collections; 
    using System.ComponentModel;
    using System.ComponentModel.Design;
    using System.Diagnostics;
    using System.Drawing; 
    using System.Globalization;
    using System.Windows.Forms; 
    using System.Windows.Forms.Design; 
    using System.Web.UI.MobileControls;
 
    using Form = System.Windows.Forms.Form;

    /*
 

 
 

 


*/
 
    /// 
    /// Represents a form used by a designer. 
    ///  
    [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
    internal abstract class DesignerForm : Form { 
        private const int SC_CONTEXTHELP = 0xF180;
        private const int WM_SYSCOMMAND = 0x0112;

        private IServiceProvider _serviceProvider; 
        private bool _firstActivate;
 
        ///  
        /// Creates a new DesignerForm with a given service provider.
        ///  
        protected DesignerForm(IServiceProvider serviceProvider) {
            Debug.Assert(serviceProvider != null);
            _serviceProvider = serviceProvider;
 
            _firstActivate = true;
 
            IUIService uiService = (IUIService)GetService(typeof(IUIService)); 
            if (uiService != null) {
                IDictionary uiStyles = uiService.Styles; 

                Font dialogFont = (Font)uiStyles["DialogFont"];
                Debug.Assert(dialogFont != null, "Did not get a dialog font to use from IUIService");
 
                Font = dialogFont;
            } 
 
            // Set RightToLeft mode based on resource file
            string rtlText = SR.GetString(SR.RTL); 
            if (!String.Equals(rtlText, "RTL_False", StringComparison.Ordinal)) {
                RightToLeft = RightToLeft.Yes;
            }
 
            HelpButton = true;
            MinimizeBox = false; 
            MaximizeBox = false; 
            ShowIcon = false;
            ShowInTaskbar = false; 
            StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
        }

        ///  
        /// The service provider for the form.
        ///  
        protected internal IServiceProvider ServiceProvider { 
            get {
                return _serviceProvider; 
            }
        }

        ///  
        /// Frees up resources.
        ///  
        protected override void Dispose(bool disposing) { 
            if (disposing) {
                _serviceProvider = null; 
            }
            base.Dispose(disposing);
        }
 
        /// 
        /// Gets a service of the desired type. Returns null if the service does not exist or there is no service provider. 
        ///  
        protected override object GetService(Type serviceType) {
            if (_serviceProvider != null) { 
                return _serviceProvider.GetService(serviceType);
            }
            return null;
        } 

        protected override void OnActivated(EventArgs e) { 
            base.OnActivated(e); 

            if (_firstActivate) { 
                _firstActivate = false;
                OnInitialActivated(e);
            }
        } 

        ///  
        /// Returns the help topic for the form. Consult with your UE contact on 
        /// what the appropriate help topic is for your dialog.
        ///  
        protected abstract string HelpTopic {
            get;
        }
 
        protected sealed override void OnHelpRequested(HelpEventArgs hevent) {
            ShowHelp(); 
            hevent.Handled = true; 
        }
 
        /// 
        /// Raised upon first activation of the form.
        /// 
        ///  
        protected virtual void OnInitialActivated(EventArgs e) {
        } 
 
        /// 
        /// Launches the help for this form. 
        /// 
        private void ShowHelp() {
            if (ServiceProvider != null) {
                IHelpService helpService = (IHelpService)ServiceProvider.GetService(typeof(IHelpService)); 
                if (helpService != null) {
                    helpService.ShowHelpFromKeyword(HelpTopic); 
                } 
            }
        } 

        /// 
        /// Overridden to reroute the context-help button to our own handler.
        ///  
        protected override void WndProc(ref Message m) {
            if ((m.Msg == WM_SYSCOMMAND) && ((int)m.WParam == SC_CONTEXTHELP)) { 
                ShowHelp(); 
                return;
            } 
            else {
                base.WndProc(ref m);
            }
        } 
    }
} 
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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