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[release/7.0] Fix Interop.Gdi32.StartDoc p/invoke #76582

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Oct 5, 2022
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[release/7.0] Fix Interop.Gdi32.StartDoc p/invoke #76582

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6 changes: 4 additions & 2 deletions src/libraries/System.Drawing.Common/src/Interop/Windows/Interop.Gdi32.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ internal static partial int StartDoc(
#if NET7_0_OR_GREATER
[MarshalUsing(typeof(HandleRefMarshaller))]
#endif
HandleRef hDC, DOCINFO lpDocInfo);
HandleRef hDC, in DOCINFO lpDocInfo);

[LibraryImport(Libraries.Gdi32, SetLastError = true)]
internal static partial int StartPage(
Expand Down Expand Up @@ -179,14 +179,16 @@ internal unsafe struct BITMAPINFO_FLAT
[NativeMarshalling(typeof(Marshaller))]
#endif
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
internal sealed class DOCINFO
internal struct DOCINFO
{
internal int cbSize = 20;
internal string? lpszDocName;
internal string? lpszOutput;
internal string? lpszDatatype;
internal int fwType;

public DOCINFO() { }

#if NET7_0_OR_GREATER
[CustomMarshaller(typeof(DOCINFO), MarshalMode.ManagedToUnmanagedIn, typeof(Marshaller))]
public static class Marshaller
Expand Down