ShowDialog()
{
UInt32 result = NativeMethods.PD_RESULT_CANCEL;
//
// Get the process main window handle
//
IntPtr owner = IntPtr.Zero;
if ((System.Windows.Application.Current != null) &&
(System.Windows.Application.Current.MainWindow != null))
{
System.Windows.Interop.WindowInteropHelper helper =
new System.Windows.Interop.WindowInteropHelper(System.Windows.Application.Current.MainWindow);
owner = helper.CriticalHandle;
}
try
{
if (this._printQueue == null || this._printTicket == null)
{
// Normally printDlgEx.SyncToStruct() probes the printer if both the print queue and print
// ticket are not null.
// If either is null we probe the printer ourselves
// If we dont end users will get notified that printing is disabled *after*
// the print dialog has been displayed.
ProbeForPrintingSupport();
}
//
// Create a PrintDlgEx instance to invoke the Win32 Print Dialog
//
using (PrintDlgExMarshaler printDlgEx = new PrintDlgExMarshaler(owner, this))
{
printDlgEx.SyncToStruct();
//
// Display the Win32 print dialog
//
Int32 hr = UnsafeNativeMethods.PrintDlgEx(printDlgEx.UnmanagedPrintDlgEx);
if (hr == MS.Win32.NativeMethods.S_OK)
{
result = printDlgEx.SyncFromStruct();
}
}
}
//
// NOTE:
// This code was previously catch(PrintingNotSupportedException), but that created a circular dependency
// between ReachFramework.dll and PresentationFramework.dll. Instead, we now catch Exception, check its full type name
// and rethrow if it doesn't match. Not perfect, but better than having a circular dependency.
//
catch(Exception e)
{
if (String.Equals(e.GetType().FullName, "System.Printing.PrintingNotSupportedException", StringComparison.Ordinal))
{
string message = System.Windows.SR.Get(System.Windows.SRID.PrintDialogInstallPrintSupportMessageBox);
string caption = System.Windows.SR.Get(System.Windows.SRID.PrintDialogInstallPrintSupportCaption);
bool isRtlCaption = caption != null && caption.Length > 0 && caption[0] == RightToLeftMark;
System.Windows.MessageBoxOptions mbOptions = isRtlCaption ? System.Windows.MessageBoxOptions.RtlReading : System.Windows.MessageBoxOptions.None;
int type =
(int) System.Windows.MessageBoxButton.OK
| (int) System.Windows.MessageBoxImage.Information
| (int) mbOptions;
if (owner == IntPtr.Zero)
{
owner = MS.Win32.UnsafeNativeMethods.GetActiveWindow();
}
if(0 != MS.Win32.UnsafeNativeMethods.MessageBox(new HandleRef(null, owner), message, caption, type))
{
result = NativeMethods.PD_RESULT_CANCEL;
}
}
else
{
// Not a PrintingNotSupportedException, rethrow
throw;
}
}
return result;
}
ShowDialog()
{
UInt32 result = NativeMethods.PD_RESULT_CANCEL;
//
// Get the process main window handle
//
IntPtr owner = IntPtr.Zero;
if ((System.Windows.Application.Current != null) &&
(System.Windows.Application.Current.MainWindow != null))
{
System.Windows.Interop.WindowInteropHelper helper =
new System.Windows.Interop.WindowInteropHelper(System.Windows.Application.Current.MainWindow);
owner = helper.CriticalHandle;
}
try
{
if (this._printQueue == null || this._printTicket == null)
{
// Normally printDlgEx.SyncToStruct() probes the printer if both the print queue and print
// ticket are not null.
// If either is null we probe the printer ourselves
// If we dont end users will get notified that printing is disabled *after*
// the print dialog has been displayed.
ProbeForPrintingSupport();
}
//
// Create a PrintDlgEx instance to invoke the Win32 Print Dialog
//
using (PrintDlgExMarshaler printDlgEx = new PrintDlgExMarshaler(owner, this))
{
printDlgEx.SyncToStruct();
//
// Display the Win32 print dialog
//
Int32 hr = UnsafeNativeMethods.PrintDlgEx(printDlgEx.UnmanagedPrintDlgEx);
if (hr == MS.Win32.NativeMethods.S_OK)
{
result = printDlgEx.SyncFromStruct();
}
}
}
//
// NOTE:
// This code was previously catch(PrintingNotSupportedException), but that created a circular dependency
// between ReachFramework.dll and PresentationFramework.dll. Instead, we now catch Exception, check its full type name
// and rethrow if it doesn't match. Not perfect, but better than having a circular dependency.
//
catch (Exception e)
{
if (String.Equals(e.GetType().FullName, "System.Printing.PrintingNotSupportedException", StringComparison.Ordinal))
{
string message = System.Windows.SR.Get(System.Windows.SRID.PrintDialogInstallPrintSupportMessageBox);
string caption = System.Windows.SR.Get(System.Windows.SRID.PrintDialogInstallPrintSupportCaption);
bool isRtlCaption = caption != null && caption.Length > 0 && caption[0] == RightToLeftMark;
System.Windows.MessageBoxOptions mbOptions = isRtlCaption ? System.Windows.MessageBoxOptions.RtlReading : System.Windows.MessageBoxOptions.None;
int type =
(int)System.Windows.MessageBoxButton.OK
| (int)System.Windows.MessageBoxImage.Information
| (int)mbOptions;
if (owner == IntPtr.Zero)
{
owner = MS.Win32.UnsafeNativeMethods.GetActiveWindow();
}
if (0 != MS.Win32.UnsafeNativeMethods.MessageBox(new HandleRef(null, owner), message, caption, type))
{
result = NativeMethods.PD_RESULT_CANCEL;
}
}
else
{
// Not a PrintingNotSupportedException, rethrow
throw;
}
}
return(result);
}
