PageSetupDialog.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / Printing / PageSetupDialog.cs / 1 / PageSetupDialog.cs

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

namespace System.Windows.Forms { 
 
    using Microsoft.Win32;
    using System; 
    using System.ComponentModel;
    using System.Diagnostics;
    using System.Drawing;
    using System.Drawing.Printing; 
    using System.Runtime.InteropServices;
    using System.Security; 
    using System.Text; 
    using System.Globalization;
 
    /// 
    /// 
    ///     Represents
    ///       a dialog box that allows users to manipulate page settings, including margins and paper orientation. 
    /// 
    [DefaultProperty("Document")] 
    [SRDescription(SR.DescriptionPageSetupDialog)] 
    // The only event this dialog has is HelpRequested, which isn't very useful
    public sealed class PageSetupDialog : CommonDialog { 
        // If PrintDocument != null, pageSettings == printDocument.PageSettings
        private PrintDocument printDocument = null;
        private PageSettings pageSettings = null;
        private PrinterSettings printerSettings = null; 

        private bool allowMargins; 
        private bool allowOrientation; 
        private bool allowPaper;
        private bool allowPrinter; 
        private Margins minMargins;
        private bool showHelp;
        private bool showNetwork;
        private bool enableMetric; 

        ///  
        ///  
        /// Initializes a new instance of the  class.
        ///  
        public PageSetupDialog() {
            Reset();
        }
 
        /// 
        ///  
        ///     
        ///       Gets or sets a value indicating whether the margins section of the dialog box is enabled.
        /// 
        ///    
        /// 
        [
        SRCategory(SR.CatBehavior), 
        DefaultValue(true),
        SRDescription(SR.PSDallowMarginsDescr) 
        ] 
        public bool AllowMargins {
            get { 
                return allowMargins;
            }
            set {
                allowMargins = value; 
            }
        } 
 
        /// 
        ///  
        ///     Gets or sets a value indicating whether the orientation section of the dialog box (landscape vs. portrait)
        ///       is enabled.
        ///       
        ///  
        [
        SRCategory(SR.CatBehavior), 
        DefaultValue(true), 
        SRDescription(SR.PSDallowOrientationDescr)
        ] 
        public bool AllowOrientation {
            get { return allowOrientation;}
            set { allowOrientation = value;}
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets a value indicating whether the paper section of the dialog box (paper size and paper source) 
        ///       is enabled.
        ///
        ///    
        ///  
        [
        SRCategory(SR.CatBehavior), 
        DefaultValue(true), 
        SRDescription(SR.PSDallowPaperDescr)
        ] 
        public bool AllowPaper {
            get { return allowPaper;}
            set { allowPaper = value;}
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets a value indicating whether the Printer button is enabled. 
        ///
        ///    
        /// 
        [ 
        SRCategory(SR.CatBehavior),
        DefaultValue(true), 
        SRDescription(SR.PSDallowPrinterDescr) 
        ]
        public bool AllowPrinter { 
            get { return allowPrinter;}
            set { allowPrinter = value;}
        }
 
        /// 
        ///  
        /// Gets or sets a value indicating the  
        /// to get page settings from.
        ///  
        /// 
        [
        SRCategory(SR.CatData),
        DefaultValue(null), 
        SRDescription(SR.PDdocumentDescr)
        ] 
        public PrintDocument Document { 
            get { return printDocument;}
            set { 
                printDocument = value;
                if (printDocument != null) {
                    pageSettings = printDocument.DefaultPageSettings;
                    printerSettings = printDocument.PrinterSettings; 
                }
            } 
        } 

        ///  
        /// 
        ///    This allows the user to override the current behavior where the Metric is converted to ThousandOfInch even for METRIC MEASUREMENTSYSTEM
        ///    which returns a HUNDREDSOFMILLIMETER value.
        ///  
        [
        DefaultValue(false), 
        SRDescription(SR.PSDenableMetricDescr), 
        Browsable(true), EditorBrowsable(EditorBrowsableState.Always)
        ] 
        public bool EnableMetric {
            get { return enableMetric;}
            set { enableMetric = value;}
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets a value indicating the minimum margins the 
        ///       user is allowed to select, in hundredths of an inch.
        ///
        ///    
        ///  
        [
        SRCategory(SR.CatData), 
        SRDescription(SR.PSDminMarginsDescr) 
        ]
        public Margins MinMargins { 
            get { return minMargins;}
            set {
                if (value == null)
                    value = new Margins(0, 0, 0, 0); 
                minMargins = value;
            } 
        } 

        ///  
        /// 
        ///    
        ///       Gets
        ///       or sets 
        ///       a value indicating
        ///       the page settings modified by the dialog box. 
        /// 
        ///    
        ///  
        [
        SRCategory(SR.CatData),
        DefaultValue(null),
        Browsable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        SRDescription(SR.PSDpageSettingsDescr) 
        ] 
        public PageSettings PageSettings {
            get { return pageSettings;} 
            set {
                pageSettings = value;
                printDocument = null;
            } 
        }
 
        ///  
        /// 
        ///     
        ///       Gets
        ///       or sets the printer
        ///       settings the dialog box will modify if the user clicks the Printer button.
        ///     
        /// 
        [ 
        SRCategory(SR.CatData), 
        DefaultValue(null),
        Browsable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        SRDescription(SR.PSDprinterSettingsDescr)
        ]
        public PrinterSettings PrinterSettings { 
            get { return printerSettings;}
            set { 
                printerSettings = value; 
                printDocument = null;
            } 
        }

        /// 
        ///  
        ///    
        ///       Gets or sets a value indicating whether the Help button is visible. 
        ///     
        /// 
        [ 
        SRCategory(SR.CatBehavior),
        DefaultValue(false),
        SRDescription(SR.PSDshowHelpDescr)
        ] 
        public bool ShowHelp {
            get { return showHelp;} 
            set { showHelp = value;} 
        }
 
        /// 
        /// 
        ///    
        ///       Gets or sets a value indicating whether the Network button is visible. 
        ///    
        ///  
        [ 
        SRCategory(SR.CatBehavior),
        DefaultValue(true), 
        SRDescription(SR.PSDshowNetworkDescr)
        ]
        public bool ShowNetwork {
            get { return showNetwork;} 
            set { showNetwork = value;}
        } 
 
        private int GetFlags() {
            int flags = 0; 
            flags |= NativeMethods.PSD_ENABLEPAGESETUPHOOK;

            if (!allowMargins) flags |= NativeMethods.PSD_DISABLEMARGINS;
            if (!allowOrientation) flags |= NativeMethods.PSD_DISABLEORIENTATION; 
            if (!allowPaper) flags |= NativeMethods.PSD_DISABLEPAPER;
            if (!allowPrinter || printerSettings == null) flags |= NativeMethods.PSD_DISABLEPRINTER; 
 
            if (showHelp) flags |= NativeMethods.PSD_SHOWHELP;
            if (!showNetwork) flags |= NativeMethods.PSD_NONETWORKBUTTON; 
            if (minMargins != null) flags |= NativeMethods.PSD_MINMARGINS;
            if (pageSettings.Margins != null) flags |= NativeMethods.PSD_MARGINS;

            // 
            return flags;
        } 
 
        /// 
        ///  
        ///    
        ///       Resets all options to their default values.
        ///    
        ///  
        public override void Reset() {
            allowMargins = true; 
            allowOrientation = true; 
            allowPaper = true;
            allowPrinter = true; 
            MinMargins = null; // turns into Margin with all zeros
            pageSettings = null;
            printDocument = null;
            printerSettings = null; 
            showHelp = false;
            showNetwork = true; 
        } 

        private void ResetMinMargins() { 
            MinMargins = null;
        }

        ///  
        /// 
        ///     
        ///       Indicates whether the  
        ///       property should be
        ///       persisted. 
        ///    
        /// 
        private bool ShouldSerializeMinMargins() {
            return minMargins.Left != 0 
            || minMargins.Right != 0
            || minMargins.Top != 0 
            || minMargins.Bottom != 0; 
        }
 
        private static void UpdateSettings(NativeMethods.PAGESETUPDLG data, PageSettings pageSettings,
                                           PrinterSettings printerSettings) {
            // SetHDevMode demands AllPrintingAndUnmanagedCode Permission : Since we are calling that function we should Assert the permision,
            IntSecurity.AllPrintingAndUnmanagedCode.Assert(); 
            try
            { 
                pageSettings.SetHdevmode(data.hDevMode); 
                if (printerSettings != null) {
                    printerSettings.SetHdevmode(data.hDevMode); 
                    printerSettings.SetHdevnames(data.hDevNames);
                }
            }
            finally 
            {
                CodeAccessPermission.RevertAssert(); 
            } 

            Margins newMargins = new Margins(); 
            newMargins.Left = data.marginLeft;
            newMargins.Top = data.marginTop;
            newMargins.Right = data.marginRight;
            newMargins.Bottom = data.marginBottom; 

            PrinterUnit fromUnit = ((data.Flags & NativeMethods.PSD_INHUNDREDTHSOFMILLIMETERS) != 0) 
                                   ? PrinterUnit.HundredthsOfAMillimeter 
                                   : PrinterUnit.ThousandthsOfAnInch;
 
            pageSettings.Margins = PrinterUnitConvert.Convert(newMargins, fromUnit, PrinterUnit.Display);
        }

 
        /// 
        ///  
        ///  
        /// 
        protected override bool RunDialog(IntPtr hwndOwner) { 
            IntSecurity.SafePrinting.Demand();

            NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(this.HookProc);
            if (pageSettings == null) 
                throw new ArgumentException(SR.GetString(SR.PSDcantShowWithoutPage));
 
            NativeMethods.PAGESETUPDLG data = new NativeMethods.PAGESETUPDLG(); 
            data.lStructSize = Marshal.SizeOf(data);
            data.Flags = GetFlags(); 
            data.hwndOwner = hwndOwner;
            data.lpfnPageSetupHook = hookProcPtr;

            PrinterUnit toUnit = PrinterUnit.ThousandthsOfAnInch; 

            // Refer VSWhidbey: 331160. Below was a breaking change from RTM and EVERETT even though this was a correct FIX. 
            // EnableMetric is a new Whidbey property which we allow the users to choose between the AutoConversion or not. 
            if (EnableMetric)
            { 
                //take the Units of Measurement while determining the PrinterUnits...
                //bug (121347)...
                StringBuilder sb = new StringBuilder(2);
                int result = UnsafeNativeMethods.GetLocaleInfo(NativeMethods.LOCALE_USER_DEFAULT,NativeMethods.LOCALE_IMEASURE, sb,sb.Capacity); 

                if (result > 0 && Int32.Parse(sb.ToString(), CultureInfo.InvariantCulture) == 0) { 
                    toUnit = PrinterUnit.HundredthsOfAMillimeter; 
                }
            } 

            if (MinMargins != null) {
                Margins margins = PrinterUnitConvert.Convert(MinMargins, PrinterUnit.Display, toUnit);
                data.minMarginLeft = margins.Left; 
                data.minMarginTop = margins.Top;
                data.minMarginRight = margins.Right; 
                data.minMarginBottom = margins.Bottom; 
            }
 
            if (pageSettings.Margins != null) {
                Margins margins = PrinterUnitConvert.Convert(pageSettings.Margins, PrinterUnit.Display, toUnit);
                data.marginLeft = margins.Left;
                data.marginTop = margins.Top; 
                data.marginRight = margins.Right;
                data.marginBottom = margins.Bottom; 
            } 

            // Ensure that the margins are >= minMargins. 
            // This is a requirement of the PAGESETUPDLG structure.
            //
            data.marginLeft = Math.Max(data.marginLeft, data.minMarginLeft);
            data.marginTop = Math.Max(data.marginTop, data.minMarginTop); 
            data.marginRight = Math.Max(data.marginRight, data.minMarginRight);
            data.marginBottom = Math.Max(data.marginBottom, data.minMarginBottom); 
 
            PrinterSettings printer = (printerSettings == null) ? pageSettings.PrinterSettings : printerSettings;
 
            // GetHDevmode demands AllPrintingAndUnmanagedCode Permission : Since we are calling that function we should Assert the permision,
            IntSecurity.AllPrintingAndUnmanagedCode.Assert();
            try {
                data.hDevMode = printer.GetHdevmode(pageSettings); 
                data.hDevNames = printer.GetHdevnames();
            } 
            finally { 
                CodeAccessPermission.RevertAssert();
            } 

            try {
                bool status = UnsafeNativeMethods.PageSetupDlg(data);
                if (!status) { 
                    // Debug.WriteLine(Windows.CommonDialogErrorToString(Windows.CommDlgExtendedError()));
                    return false; 
                } 

                UpdateSettings(data, pageSettings, printerSettings); // yes, printerSettings, not printer 
                return true;
            }
            finally {
                UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.hDevMode)); 
                UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.hDevNames));
            } 
        } 
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Windows.Forms { 
 
    using Microsoft.Win32;
    using System; 
    using System.ComponentModel;
    using System.Diagnostics;
    using System.Drawing;
    using System.Drawing.Printing; 
    using System.Runtime.InteropServices;
    using System.Security; 
    using System.Text; 
    using System.Globalization;
 
    /// 
    /// 
    ///     Represents
    ///       a dialog box that allows users to manipulate page settings, including margins and paper orientation. 
    /// 
    [DefaultProperty("Document")] 
    [SRDescription(SR.DescriptionPageSetupDialog)] 
    // The only event this dialog has is HelpRequested, which isn't very useful
    public sealed class PageSetupDialog : CommonDialog { 
        // If PrintDocument != null, pageSettings == printDocument.PageSettings
        private PrintDocument printDocument = null;
        private PageSettings pageSettings = null;
        private PrinterSettings printerSettings = null; 

        private bool allowMargins; 
        private bool allowOrientation; 
        private bool allowPaper;
        private bool allowPrinter; 
        private Margins minMargins;
        private bool showHelp;
        private bool showNetwork;
        private bool enableMetric; 

        ///  
        ///  
        /// Initializes a new instance of the  class.
        ///  
        public PageSetupDialog() {
            Reset();
        }
 
        /// 
        ///  
        ///     
        ///       Gets or sets a value indicating whether the margins section of the dialog box is enabled.
        /// 
        ///    
        /// 
        [
        SRCategory(SR.CatBehavior), 
        DefaultValue(true),
        SRDescription(SR.PSDallowMarginsDescr) 
        ] 
        public bool AllowMargins {
            get { 
                return allowMargins;
            }
            set {
                allowMargins = value; 
            }
        } 
 
        /// 
        ///  
        ///     Gets or sets a value indicating whether the orientation section of the dialog box (landscape vs. portrait)
        ///       is enabled.
        ///       
        ///  
        [
        SRCategory(SR.CatBehavior), 
        DefaultValue(true), 
        SRDescription(SR.PSDallowOrientationDescr)
        ] 
        public bool AllowOrientation {
            get { return allowOrientation;}
            set { allowOrientation = value;}
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets a value indicating whether the paper section of the dialog box (paper size and paper source) 
        ///       is enabled.
        ///
        ///    
        ///  
        [
        SRCategory(SR.CatBehavior), 
        DefaultValue(true), 
        SRDescription(SR.PSDallowPaperDescr)
        ] 
        public bool AllowPaper {
            get { return allowPaper;}
            set { allowPaper = value;}
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets a value indicating whether the Printer button is enabled. 
        ///
        ///    
        /// 
        [ 
        SRCategory(SR.CatBehavior),
        DefaultValue(true), 
        SRDescription(SR.PSDallowPrinterDescr) 
        ]
        public bool AllowPrinter { 
            get { return allowPrinter;}
            set { allowPrinter = value;}
        }
 
        /// 
        ///  
        /// Gets or sets a value indicating the  
        /// to get page settings from.
        ///  
        /// 
        [
        SRCategory(SR.CatData),
        DefaultValue(null), 
        SRDescription(SR.PDdocumentDescr)
        ] 
        public PrintDocument Document { 
            get { return printDocument;}
            set { 
                printDocument = value;
                if (printDocument != null) {
                    pageSettings = printDocument.DefaultPageSettings;
                    printerSettings = printDocument.PrinterSettings; 
                }
            } 
        } 

        ///  
        /// 
        ///    This allows the user to override the current behavior where the Metric is converted to ThousandOfInch even for METRIC MEASUREMENTSYSTEM
        ///    which returns a HUNDREDSOFMILLIMETER value.
        ///  
        [
        DefaultValue(false), 
        SRDescription(SR.PSDenableMetricDescr), 
        Browsable(true), EditorBrowsable(EditorBrowsableState.Always)
        ] 
        public bool EnableMetric {
            get { return enableMetric;}
            set { enableMetric = value;}
        } 

        ///  
        ///  
        ///    
        ///       Gets or sets a value indicating the minimum margins the 
        ///       user is allowed to select, in hundredths of an inch.
        ///
        ///    
        ///  
        [
        SRCategory(SR.CatData), 
        SRDescription(SR.PSDminMarginsDescr) 
        ]
        public Margins MinMargins { 
            get { return minMargins;}
            set {
                if (value == null)
                    value = new Margins(0, 0, 0, 0); 
                minMargins = value;
            } 
        } 

        ///  
        /// 
        ///    
        ///       Gets
        ///       or sets 
        ///       a value indicating
        ///       the page settings modified by the dialog box. 
        /// 
        ///    
        ///  
        [
        SRCategory(SR.CatData),
        DefaultValue(null),
        Browsable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        SRDescription(SR.PSDpageSettingsDescr) 
        ] 
        public PageSettings PageSettings {
            get { return pageSettings;} 
            set {
                pageSettings = value;
                printDocument = null;
            } 
        }
 
        ///  
        /// 
        ///     
        ///       Gets
        ///       or sets the printer
        ///       settings the dialog box will modify if the user clicks the Printer button.
        ///     
        /// 
        [ 
        SRCategory(SR.CatData), 
        DefaultValue(null),
        Browsable(false), 
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
        SRDescription(SR.PSDprinterSettingsDescr)
        ]
        public PrinterSettings PrinterSettings { 
            get { return printerSettings;}
            set { 
                printerSettings = value; 
                printDocument = null;
            } 
        }

        /// 
        ///  
        ///    
        ///       Gets or sets a value indicating whether the Help button is visible. 
        ///     
        /// 
        [ 
        SRCategory(SR.CatBehavior),
        DefaultValue(false),
        SRDescription(SR.PSDshowHelpDescr)
        ] 
        public bool ShowHelp {
            get { return showHelp;} 
            set { showHelp = value;} 
        }
 
        /// 
        /// 
        ///    
        ///       Gets or sets a value indicating whether the Network button is visible. 
        ///    
        ///  
        [ 
        SRCategory(SR.CatBehavior),
        DefaultValue(true), 
        SRDescription(SR.PSDshowNetworkDescr)
        ]
        public bool ShowNetwork {
            get { return showNetwork;} 
            set { showNetwork = value;}
        } 
 
        private int GetFlags() {
            int flags = 0; 
            flags |= NativeMethods.PSD_ENABLEPAGESETUPHOOK;

            if (!allowMargins) flags |= NativeMethods.PSD_DISABLEMARGINS;
            if (!allowOrientation) flags |= NativeMethods.PSD_DISABLEORIENTATION; 
            if (!allowPaper) flags |= NativeMethods.PSD_DISABLEPAPER;
            if (!allowPrinter || printerSettings == null) flags |= NativeMethods.PSD_DISABLEPRINTER; 
 
            if (showHelp) flags |= NativeMethods.PSD_SHOWHELP;
            if (!showNetwork) flags |= NativeMethods.PSD_NONETWORKBUTTON; 
            if (minMargins != null) flags |= NativeMethods.PSD_MINMARGINS;
            if (pageSettings.Margins != null) flags |= NativeMethods.PSD_MARGINS;

            // 
            return flags;
        } 
 
        /// 
        ///  
        ///    
        ///       Resets all options to their default values.
        ///    
        ///  
        public override void Reset() {
            allowMargins = true; 
            allowOrientation = true; 
            allowPaper = true;
            allowPrinter = true; 
            MinMargins = null; // turns into Margin with all zeros
            pageSettings = null;
            printDocument = null;
            printerSettings = null; 
            showHelp = false;
            showNetwork = true; 
        } 

        private void ResetMinMargins() { 
            MinMargins = null;
        }

        ///  
        /// 
        ///     
        ///       Indicates whether the  
        ///       property should be
        ///       persisted. 
        ///    
        /// 
        private bool ShouldSerializeMinMargins() {
            return minMargins.Left != 0 
            || minMargins.Right != 0
            || minMargins.Top != 0 
            || minMargins.Bottom != 0; 
        }
 
        private static void UpdateSettings(NativeMethods.PAGESETUPDLG data, PageSettings pageSettings,
                                           PrinterSettings printerSettings) {
            // SetHDevMode demands AllPrintingAndUnmanagedCode Permission : Since we are calling that function we should Assert the permision,
            IntSecurity.AllPrintingAndUnmanagedCode.Assert(); 
            try
            { 
                pageSettings.SetHdevmode(data.hDevMode); 
                if (printerSettings != null) {
                    printerSettings.SetHdevmode(data.hDevMode); 
                    printerSettings.SetHdevnames(data.hDevNames);
                }
            }
            finally 
            {
                CodeAccessPermission.RevertAssert(); 
            } 

            Margins newMargins = new Margins(); 
            newMargins.Left = data.marginLeft;
            newMargins.Top = data.marginTop;
            newMargins.Right = data.marginRight;
            newMargins.Bottom = data.marginBottom; 

            PrinterUnit fromUnit = ((data.Flags & NativeMethods.PSD_INHUNDREDTHSOFMILLIMETERS) != 0) 
                                   ? PrinterUnit.HundredthsOfAMillimeter 
                                   : PrinterUnit.ThousandthsOfAnInch;
 
            pageSettings.Margins = PrinterUnitConvert.Convert(newMargins, fromUnit, PrinterUnit.Display);
        }

 
        /// 
        ///  
        ///  
        /// 
        protected override bool RunDialog(IntPtr hwndOwner) { 
            IntSecurity.SafePrinting.Demand();

            NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(this.HookProc);
            if (pageSettings == null) 
                throw new ArgumentException(SR.GetString(SR.PSDcantShowWithoutPage));
 
            NativeMethods.PAGESETUPDLG data = new NativeMethods.PAGESETUPDLG(); 
            data.lStructSize = Marshal.SizeOf(data);
            data.Flags = GetFlags(); 
            data.hwndOwner = hwndOwner;
            data.lpfnPageSetupHook = hookProcPtr;

            PrinterUnit toUnit = PrinterUnit.ThousandthsOfAnInch; 

            // Refer VSWhidbey: 331160. Below was a breaking change from RTM and EVERETT even though this was a correct FIX. 
            // EnableMetric is a new Whidbey property which we allow the users to choose between the AutoConversion or not. 
            if (EnableMetric)
            { 
                //take the Units of Measurement while determining the PrinterUnits...
                //bug (121347)...
                StringBuilder sb = new StringBuilder(2);
                int result = UnsafeNativeMethods.GetLocaleInfo(NativeMethods.LOCALE_USER_DEFAULT,NativeMethods.LOCALE_IMEASURE, sb,sb.Capacity); 

                if (result > 0 && Int32.Parse(sb.ToString(), CultureInfo.InvariantCulture) == 0) { 
                    toUnit = PrinterUnit.HundredthsOfAMillimeter; 
                }
            } 

            if (MinMargins != null) {
                Margins margins = PrinterUnitConvert.Convert(MinMargins, PrinterUnit.Display, toUnit);
                data.minMarginLeft = margins.Left; 
                data.minMarginTop = margins.Top;
                data.minMarginRight = margins.Right; 
                data.minMarginBottom = margins.Bottom; 
            }
 
            if (pageSettings.Margins != null) {
                Margins margins = PrinterUnitConvert.Convert(pageSettings.Margins, PrinterUnit.Display, toUnit);
                data.marginLeft = margins.Left;
                data.marginTop = margins.Top; 
                data.marginRight = margins.Right;
                data.marginBottom = margins.Bottom; 
            } 

            // Ensure that the margins are >= minMargins. 
            // This is a requirement of the PAGESETUPDLG structure.
            //
            data.marginLeft = Math.Max(data.marginLeft, data.minMarginLeft);
            data.marginTop = Math.Max(data.marginTop, data.minMarginTop); 
            data.marginRight = Math.Max(data.marginRight, data.minMarginRight);
            data.marginBottom = Math.Max(data.marginBottom, data.minMarginBottom); 
 
            PrinterSettings printer = (printerSettings == null) ? pageSettings.PrinterSettings : printerSettings;
 
            // GetHDevmode demands AllPrintingAndUnmanagedCode Permission : Since we are calling that function we should Assert the permision,
            IntSecurity.AllPrintingAndUnmanagedCode.Assert();
            try {
                data.hDevMode = printer.GetHdevmode(pageSettings); 
                data.hDevNames = printer.GetHdevnames();
            } 
            finally { 
                CodeAccessPermission.RevertAssert();
            } 

            try {
                bool status = UnsafeNativeMethods.PageSetupDlg(data);
                if (!status) { 
                    // Debug.WriteLine(Windows.CommonDialogErrorToString(Windows.CommDlgExtendedError()));
                    return false; 
                } 

                UpdateSettings(data, pageSettings, printerSettings); // yes, printerSettings, not printer 
                return true;
            }
            finally {
                UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.hDevMode)); 
                UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.hDevNames));
            } 
        } 
    }
} 


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

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