internal static NativeMethods.PRINTDLGEX CreatePRINTDLGEX()
{
NativeMethods.PRINTDLGEX data = new NativeMethods.PRINTDLGEX();
data.lStructSize = Marshal.SizeOf(data);
data.hwndOwner = IntPtr.Zero;
data.hDevMode = IntPtr.Zero;
data.hDevNames = IntPtr.Zero;
data.hDC = IntPtr.Zero;
data.Flags = 0;
data.Flags2 = 0;
data.ExclusionFlags = 0;
data.nPageRanges = 0;
data.nMaxPageRanges = 1;
data.pageRanges = UnsafeNativeMethods.GlobalAlloc(NativeMethods.GPTR,
data.nMaxPageRanges * Marshal.SizeOf <NativeMethods.PRINTPAGERANGE>());
data.nMinPage = 0;
data.nMaxPage = 9999;
data.nCopies = 1;
data.hInstance = IntPtr.Zero;
data.lpPrintTemplateName = null;
data.nPropertyPages = 0;
data.lphPropertyPages = IntPtr.Zero;
data.nStartPage = NativeMethods.START_PAGE_GENERAL;
data.dwResultAction = 0;
return(data);
}
protected override bool RunDialog(IntPtr hwndOwner)
{
if (!UseEXDialog)
{
return(ShowPrintDialog(hwndOwner));
}
NativeMethods.PRINTDLGEX data = CreatePRINTDLGEX();
return(ShowPrintDialog(hwndOwner, data));
}
protected override bool RunDialog(IntPtr hwndOwner)
{
var hookProcPtr = new NativeMethods.WndProc(HookProc);
if (!UseEXDialog)
{
NativeMethods.PRINTDLG data = CreatePRINTDLG();
return(ShowPrintDialog(hwndOwner, hookProcPtr, data));
}
else
{
NativeMethods.PRINTDLGEX data = CreatePRINTDLGEX();
return(ShowPrintDialog(hwndOwner, data));
}
}
/// <include file='doc\PrintDialog.uex' path='docs/doc[@for="PrintDialog.RunDialog"]/*' />
/// <devdoc>
/// </devdoc>
/// <internalonly/>
// Use PrintDlgEx and PRINTDLGEX on Win2k and newer OS'.
protected override bool RunDialog(IntPtr hwndOwner)
{
bool returnValue = false;
NativeMethods.WndProc hookProcPtr = new NativeMethods.WndProc(this.HookProc);
if (!UseEXDialog || (Environment.OSVersion.Platform != System.PlatformID.Win32NT ||
Environment.OSVersion.Version.Major < 5))
{
NativeMethods.PRINTDLG data = CreatePRINTDLG();
returnValue = ShowPrintDialog(hwndOwner, hookProcPtr, data);
}
else
{
NativeMethods.PRINTDLGEX data = CreatePRINTDLGEX();
returnValue = ShowPrintDialog(hwndOwner, data);
}
return(returnValue);
}
// Due to the nature of PRINTDLGEX vs PRINTDLG, separate but similar methods
// are required for showing the print dialog on Win2k and newer OS'.
private bool ShowPrintDialog(IntPtr hwndOwner, NativeMethods.PRINTDLGEX data)
{
data.Flags = GetFlags();
data.nCopies = PrinterSettings.Copies;
data.hwndOwner = hwndOwner;
try
{
if (PageSettings == null)
{
data.hDevMode = PrinterSettings.GetHdevmode();
}
else
{
data.hDevMode = PrinterSettings.GetHdevmode(PageSettings);
}
data.hDevNames = PrinterSettings.GetHdevnames();
}
catch (InvalidPrinterException)
{
data.hDevMode = IntPtr.Zero;
data.hDevNames = IntPtr.Zero;
// Leave those fields null; Windows will fill them in
}
try
{
// Windows doesn't like it if page numbers are invalid
if (AllowSomePages)
{
if (PrinterSettings.FromPage < PrinterSettings.MinimumPage ||
PrinterSettings.FromPage > PrinterSettings.MaximumPage)
{
throw new ArgumentException(string.Format(SR.PDpageOutOfRange, "FromPage"));
}
if (PrinterSettings.ToPage < PrinterSettings.MinimumPage ||
PrinterSettings.ToPage > PrinterSettings.MaximumPage)
{
throw new ArgumentException(string.Format(SR.PDpageOutOfRange, "ToPage"));
}
if (PrinterSettings.ToPage < PrinterSettings.FromPage)
{
throw new ArgumentException(string.Format(SR.PDpageOutOfRange, "FromPage"));
}
unsafe
{
int *pageRangeField = (int *)data.pageRanges;
* pageRangeField = PrinterSettings.FromPage;
pageRangeField += 1;
*pageRangeField = PrinterSettings.ToPage;
}
data.nPageRanges = 1;
data.nMinPage = PrinterSettings.MinimumPage;
data.nMaxPage = PrinterSettings.MaximumPage;
}
//
// The flags NativeMethods.PD_SHOWHELP and NativeMethods.PD_NONETWORKBUTTON don't work with
// PrintDlgEx. So we have to strip them out.
data.Flags &= ~(NativeMethods.PD_SHOWHELP | NativeMethods.PD_NONETWORKBUTTON);
int hr = UnsafeNativeMethods.PrintDlgEx(data);
if (NativeMethods.Failed(hr) || data.dwResultAction == NativeMethods.PD_RESULT_CANCEL)
{
return(false);
}
UpdatePrinterSettings(data.hDevMode, data.hDevNames, (short)data.nCopies, data.Flags, PrinterSettings, PageSettings);
PrintToFile = ((data.Flags & NativeMethods.PD_PRINTTOFILE) != 0);
PrinterSettings.PrintToFile = PrintToFile;
if (AllowSomePages)
{
unsafe
{
int *pageRangeField = (int *)data.pageRanges;
PrinterSettings.FromPage = *pageRangeField;
pageRangeField += 1;
PrinterSettings.ToPage = *pageRangeField;
}
}
// When the flag PD_USEDEVMODECOPIESANDCOLLATE is not set,
// PRINTDLG.nCopies or PRINTDLG.nCopies indicates the number of copies the user wants
// to print, and the PD_COLLATE flag in the Flags member indicates
// whether the user wants to print them collated.
if ((data.Flags & NativeMethods.PD_USEDEVMODECOPIESANDCOLLATE) == 0)
{
PrinterSettings.Copies = (short)(data.nCopies);
PrinterSettings.Collate = ((data.Flags & NativeMethods.PD_COLLATE) == NativeMethods.PD_COLLATE);
}
// We should return true only if the user pressed the "Print" button while dismissing the dialog.
return(data.dwResultAction == NativeMethods.PD_RESULT_PRINT);
}
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));
}
}
}
public static extern HRESULT PrintDlgEx([In, Out] NativeMethods.PRINTDLGEX lppdex);
// VSWhidbey 93449: Use PRINTDLGEX on Win2k and newer OS'. Note that at the time of this
// fix, PrinterSettings did not support multiple page ranges. (See VSWhidbey 193829.)
// Create a PRINTDLGEX with a few useful defaults.
internal static NativeMethods.PRINTDLGEX CreatePRINTDLGEX() {
NativeMethods.PRINTDLGEX data = new NativeMethods.PRINTDLGEX();
data.lStructSize = Marshal.SizeOf(data);
data.hwndOwner = IntPtr.Zero;
data.hDevMode = IntPtr.Zero;
data.hDevNames = IntPtr.Zero;
data.hDC = IntPtr.Zero;
data.Flags = 0;
data.Flags2 = 0;
data.ExclusionFlags = 0;
data.nPageRanges = 0;
data.nMaxPageRanges = 1;
data.pageRanges = UnsafeNativeMethods.GlobalAlloc(NativeMethods.GPTR,
data.nMaxPageRanges * Marshal.SizeOf(typeof(NativeMethods.PRINTPAGERANGE)));
data.nMinPage = 0;
data.nMaxPage = 9999;
data.nCopies = 1;
data.hInstance = IntPtr.Zero;
data.lpPrintTemplateName = null;
data.nPropertyPages = 0;
data.lphPropertyPages = IntPtr.Zero;
data.nStartPage = NativeMethods.START_PAGE_GENERAL;
data.dwResultAction = 0;
return data;
}
