Managed C++ and Direct3D

[Akusei]

I have a code snippet and it will not compile.


PresentParameters *pp = new PresentParameters();
pp->Windowed = true;
pp->SwapEffect = SwapEffect:iscard;

this->m_Device = new Device(0, DeviceType::Hardware, target, CreateFlags::SoftwareVertexProcessing, pp);


"target" is a System::Windows::Forms::Control object. The constructor seems to be ok and all data being passed to it as well. I get this compile-time error:


error C2664: 'Microsoft:irectX:irect3D:evice:evice(int,Microsoft:irectX:irect3D:eviceType,System::IntPtr,Microsoft:irectX:irect3D::CreateFlags,Microsoft:irectX:irect3D:resentParameters __gc * __gc[])' : cannot convert parameter 5 from 'Microsoft:irectX:irect3D:resentParameters __gc *' to 'System::IntPtr'


This makes no sense because in this constructor there is no parameter that needs to be an IntPtr... the constructor is this


Device(int, DeviceType, Control __gc *, CreateFlags, PresentParameters __gc * __gc[]);


Does anyone know why this will not compile?

 

[Akusei]

Just to clear something up as well. In the Error above it shows the constructor with System::IntPtr as parameter number 3. This is incorrect! the parameter is actually supposed to be "Control __gc *". I have no clue why it shows up in the error this way. Also, if I make the 5th paramter "pp" to NULL it will compile just fine (this will not work at run-time though).

 

[Akusei]

How does this make sense!!!

I changed the call to the constructor to this


this->m_Device = new Device(0, DeviceType::Hardware, target, CreateFlags::SoftwareVertexProcessing, (IntPtr)&pp);


I did this to satisfy the compilers complaining about Parameter 5 cannot be cast from <whatever> to System::IntPtr! After I made this change and tried to compile, it spit this back at me!


d:\Lab\MapEditor\D3D.cpp(60): error C2664: 'Microsoft:irectX:irect3D:evice:evice(int,Microsoft:irectX:irect3D:eviceType,System::IntPtr,Microsoft:irectX:irect3D::CreateFlags,Microsoft:irectX:irect3D:resentParameters __gc * __gc[])' : cannot convert parameter 5 from 'System::IntPtr' to 'System::IntPtr'


Now, can someone please tell me how I can't convert a System::IntPte to a System::IntPtr?