com

问题 I've been studying the code from the DirectXTK example project and trying to implement it in a new project. It seems like Microsoft recommends using WinRT in new projects, though, so I decided I would try to switch instances of WRL::ComPtr to winrt::com_ptr . I'm stuck, though, trying to move between ID3D11Device1 in the project's Game class and ID3DDevice in D3D11CreateDevice() . Here's the example code, slightly abstracted for simplicity's sake: ComPtr<ID3D11Device1> global_device; void

问题 I am trying to call GetImageDlg on IWiaDevMgr2 . There are a number of quite complicated methods (which I am not using) referencing a number of types (that I am also not using). As I cannot find a TLB or an IDL from which to automatically generate my ComImport , I would prefer to avoid having to manually translate all of the referenced types. Can I "skip" methods and types by substituting from [InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("79C07CF1-CBDD-41ee-8EC3-F00080CADA7A")]

问题 I am trying to call GetImageDlg on IWiaDevMgr2 . There are a number of quite complicated methods (which I am not using) referencing a number of types (that I am also not using). As I cannot find a TLB or an IDL from which to automatically generate my ComImport , I would prefer to avoid having to manually translate all of the referenced types. Can I "skip" methods and types by substituting from [InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("79C07CF1-CBDD-41ee-8EC3-F00080CADA7A")]

问题 I am trying to call GetImageDlg on IWiaDevMgr2 . There are a number of quite complicated methods (which I am not using) referencing a number of types (that I am also not using). As I cannot find a TLB or an IDL from which to automatically generate my ComImport , I would prefer to avoid having to manually translate all of the referenced types. Can I "skip" methods and types by substituting from [InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("79C07CF1-CBDD-41ee-8EC3-F00080CADA7A")]

问题 I am trying to call GetImageDlg on IWiaDevMgr2 . There are a number of quite complicated methods (which I am not using) referencing a number of types (that I am also not using). As I cannot find a TLB or an IDL from which to automatically generate my ComImport , I would prefer to avoid having to manually translate all of the referenced types. Can I "skip" methods and types by substituting from [InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("79C07CF1-CBDD-41ee-8EC3-F00080CADA7A")]

问题 I am trying to call GetImageDlg on IWiaDevMgr2 . There are a number of quite complicated methods (which I am not using) referencing a number of types (that I am also not using). As I cannot find a TLB or an IDL from which to automatically generate my ComImport , I would prefer to avoid having to manually translate all of the referenced types. Can I "skip" methods and types by substituting from [InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("79C07CF1-CBDD-41ee-8EC3-F00080CADA7A")]

问题 public static PowerPoint.Presentation GetActivePPT(this PowerPoint.Application application) { try { if (App.Presentations.Count > 0) { return application.ActivePresentation; } else { return null; } } catch (Exception ex) { return null; } } I call this function like so: PowerPoint.Presentation ppPresentation = PowerPointApplication.GetActivePPT(); if(ppPresentation != null) { Console.WriteLine(ppPresentation.Name); } And I get a : COMException: Message:Presentation (unknown member) : Invalid

问题 public static PowerPoint.Presentation GetActivePPT(this PowerPoint.Application application) { try { if (App.Presentations.Count > 0) { return application.ActivePresentation; } else { return null; } } catch (Exception ex) { return null; } } I call this function like so: PowerPoint.Presentation ppPresentation = PowerPointApplication.GetActivePPT(); if(ppPresentation != null) { Console.WriteLine(ppPresentation.Name); } And I get a : COMException: Message:Presentation (unknown member) : Invalid

来源： https://stackoverflow.com/questions/62996150/mapping-a-com-interface-method-in-jna

来源： https://stackoverflow.com/questions/62996150/mapping-a-com-interface-method-in-jna