FreeUnmanagedPrintDlgExStruct(
IntPtr unmanagedBuffer
)
{
if (unmanagedBuffer == IntPtr.Zero)
{
return;
}
IntPtr devModeHandle = IntPtr.Zero;
IntPtr devNamesHandle = IntPtr.Zero;
IntPtr pageRangePtr = IntPtr.Zero;
//
// Extract the devmode and devnames handles from the appropriate PRINTDLGEX structure
//
if (!Is64Bit())
{
NativeMethods.PRINTDLGEX32 pdex = (NativeMethods.PRINTDLGEX32)Marshal.PtrToStructure(
unmanagedBuffer,
typeof(NativeMethods.PRINTDLGEX32));
devModeHandle = pdex.hDevMode;
devNamesHandle = pdex.hDevNames;
pageRangePtr = pdex.lpPageRanges;
}
else
{
NativeMethods.PRINTDLGEX64 pdex = (NativeMethods.PRINTDLGEX64)Marshal.PtrToStructure(
unmanagedBuffer,
typeof(NativeMethods.PRINTDLGEX64));
devModeHandle = pdex.hDevMode;
devNamesHandle = pdex.hDevNames;
pageRangePtr = pdex.lpPageRanges;
}
if (devModeHandle != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(devModeHandle);
}
if (devNamesHandle != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(devNamesHandle);
}
if (pageRangePtr != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(pageRangePtr);
}
Marshal.FreeHGlobal(unmanagedBuffer);
}
private void FreeUnmanagedPrintDlgExStruct(IntPtr unmanagedBuffer)
{
if (unmanagedBuffer == IntPtr.Zero)
{
return;
}
IntPtr intPtr = IntPtr.Zero;
IntPtr intPtr2 = IntPtr.Zero;
IntPtr intPtr3 = IntPtr.Zero;
if (!this.Is64Bit())
{
NativeMethods.PRINTDLGEX32 printdlgex = (NativeMethods.PRINTDLGEX32)Marshal.PtrToStructure(unmanagedBuffer, typeof(NativeMethods.PRINTDLGEX32));
intPtr = printdlgex.hDevMode;
intPtr2 = printdlgex.hDevNames;
intPtr3 = printdlgex.lpPageRanges;
}
else
{
NativeMethods.PRINTDLGEX64 printdlgex2 = (NativeMethods.PRINTDLGEX64)Marshal.PtrToStructure(unmanagedBuffer, typeof(NativeMethods.PRINTDLGEX64));
intPtr = printdlgex2.hDevMode;
intPtr2 = printdlgex2.hDevNames;
intPtr3 = printdlgex2.lpPageRanges;
}
if (intPtr != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(intPtr);
}
if (intPtr2 != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(intPtr2);
}
if (intPtr3 != IntPtr.Zero)
{
UnsafeNativeMethods.GlobalFree(intPtr3);
}
Marshal.FreeHGlobal(unmanagedBuffer);
}