protected override bool RunDialog(IntPtr hwndOwner)
{
System.Windows.Forms.IntSecurity.SafePrinting.Demand();
System.Windows.Forms.NativeMethods.WndProc hookProcPtr = new System.Windows.Forms.NativeMethods.WndProc(this.HookProc);
if ((!this.UseEXDialog || (Environment.OSVersion.Platform != PlatformID.Win32NT)) || (Environment.OSVersion.Version.Major < 5))
{
System.Windows.Forms.NativeMethods.PRINTDLG printdlg = CreatePRINTDLG();
return(this.ShowPrintDialog(hwndOwner, hookProcPtr, printdlg));
}
System.Windows.Forms.NativeMethods.PRINTDLGEX data = CreatePRINTDLGEX();
return(this.ShowPrintDialog(hwndOwner, data));
}
private unsafe bool ShowPrintDialog(IntPtr hwndOwner, System.Windows.Forms.NativeMethods.PRINTDLGEX data)
{
bool flag;
data.Flags = this.GetFlags();
data.nCopies = this.PrinterSettings.Copies;
data.hwndOwner = hwndOwner;
System.Windows.Forms.IntSecurity.AllPrintingAndUnmanagedCode.Assert();
try
{
if (this.PageSettings == null)
{
data.hDevMode = this.PrinterSettings.GetHdevmode();
}
else
{
data.hDevMode = this.PrinterSettings.GetHdevmode(this.PageSettings);
}
data.hDevNames = this.PrinterSettings.GetHdevnames();
}
catch (InvalidPrinterException)
{
data.hDevMode = IntPtr.Zero;
data.hDevNames = IntPtr.Zero;
}
finally
{
CodeAccessPermission.RevertAssert();
}
try
{
if (this.AllowSomePages)
{
if ((this.PrinterSettings.FromPage < this.PrinterSettings.MinimumPage) || (this.PrinterSettings.FromPage > this.PrinterSettings.MaximumPage))
{
throw new ArgumentException(System.Windows.Forms.SR.GetString("PDpageOutOfRange", new object[] { "FromPage" }));
}
if ((this.PrinterSettings.ToPage < this.PrinterSettings.MinimumPage) || (this.PrinterSettings.ToPage > this.PrinterSettings.MaximumPage))
{
throw new ArgumentException(System.Windows.Forms.SR.GetString("PDpageOutOfRange", new object[] { "ToPage" }));
}
if (this.PrinterSettings.ToPage < this.PrinterSettings.FromPage)
{
throw new ArgumentException(System.Windows.Forms.SR.GetString("PDpageOutOfRange", new object[] { "FromPage" }));
}
int *pageRanges = (int *)data.pageRanges;
pageRanges[0] = this.PrinterSettings.FromPage;
pageRanges++;
pageRanges[0] = this.PrinterSettings.ToPage;
data.nPageRanges = 1;
data.nMinPage = this.PrinterSettings.MinimumPage;
data.nMaxPage = this.PrinterSettings.MaximumPage;
}
data.Flags &= -2099201;
if (System.Windows.Forms.NativeMethods.Failed(UnsafeNativeMethods.PrintDlgEx(data)) || (data.dwResultAction == 0))
{
return(false);
}
System.Windows.Forms.IntSecurity.AllPrintingAndUnmanagedCode.Assert();
try
{
UpdatePrinterSettings(data.hDevMode, data.hDevNames, (short)data.nCopies, data.Flags, this.PrinterSettings, this.PageSettings);
}
finally
{
CodeAccessPermission.RevertAssert();
}
this.PrintToFile = (data.Flags & 0x20) != 0;
this.PrinterSettings.PrintToFile = this.PrintToFile;
if (this.AllowSomePages)
{
int *numPtr2 = (int *)data.pageRanges;
this.PrinterSettings.FromPage = numPtr2[0];
numPtr2++;
this.PrinterSettings.ToPage = numPtr2[0];
}
if (((data.Flags & 0x40000) == 0) && (Environment.OSVersion.Version.Major >= 6))
{
this.PrinterSettings.Copies = (short)data.nCopies;
this.PrinterSettings.Collate = (data.Flags & 0x10) == 0x10;
}
flag = data.dwResultAction == 1;
}
finally
{
if (data.hDevMode != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.hDevMode));
}
if (data.hDevNames != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.hDevNames));
}
if (data.pageRanges != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(new HandleRef(data, data.pageRanges));
}
}
return(flag);
}
