Fix IFileSaveDialog COM interop definition

mamoreau-devolutions · mamoreau-devolutions · commit 4d758fd2c628 · 2026-03-17T13:01:41.000-04:00
diff --git a/src/ExternalLibraries.FilePickers/Interfaces/IFileOpenDialog.cs b/src/ExternalLibraries.FilePickers/Interfaces/IFileOpenDialog.cs
@@ -21,17 +21,8 @@ internal interface IFileOpenDialog : IFileDialog
     void GetSelectedItems([MarshalAs(UnmanagedType.Interface)] out IShellItemArray ppsai);
 }
 
+[ComImport(), Guid(IIDGuid.IFileSaveDialog), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
 internal interface IFileSaveDialog : IFileDialog
 {
-    // Defined on IFileDialog - repeated here due to requirements of COM interop layer
-    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
-    void SetFileTypes([In] uint cFileTypes, [In] ref COMDLG_FILTERSPEC rgFilterSpec);
-
-    // Defined by IFileOpenDialog
-    // ---------------------------------------------------------------------------------
-    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
-    void GetResults([MarshalAs(UnmanagedType.Interface)] out IShellItemArray ppenum);
-
-    [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
-    void GetSelectedItems([MarshalAs(UnmanagedType.Interface)] out IShellItemArray ppsai);
+    // Marker interface for COM interop with IFileSaveDialog.
 }

Original file line number	Diff line number	Diff line change
`@@ -21,17 +21,8 @@ internal interface IFileOpenDialog : IFileDialog`
`21`	`21`	`void GetSelectedItems([MarshalAs(UnmanagedType.Interface)] out IShellItemArray ppsai);`
`22`	`22`	`}`
`23`	`23`
	`24`	`+[ComImport(), Guid(IIDGuid.IFileSaveDialog), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]`
`24`	`25`	`internal interface IFileSaveDialog : IFileDialog`
`25`	`26`	`{`
`26`		`- // Defined on IFileDialog - repeated here due to requirements of COM interop layer`
`27`		`- [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]`
`28`		`- void SetFileTypes([In] uint cFileTypes, [In] ref COMDLG_FILTERSPEC rgFilterSpec);`
`29`		`-`
`30`		`- // Defined by IFileOpenDialog`
`31`		`- // ---------------------------------------------------------------------------------`
`32`		`- [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]`
`33`		`- void GetResults([MarshalAs(UnmanagedType.Interface)] out IShellItemArray ppenum);`
`34`		`-`
`35`		`- [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]`
`36`		`- void GetSelectedItems([MarshalAs(UnmanagedType.Interface)] out IShellItemArray ppsai);`
	`27`	`+ // Marker interface for COM interop with IFileSaveDialog.`
`37`	`28`	`}`