C#.Net Calling a C++ DLL
- by hayer
Hi
I got a DLL(without the sourcecode) which exports like this:
?ReceiveCoreDataPtr@@YAXPAX@Z
?xenoAddRigidBodyAngularImpulse@@YAXHMMM@Z
?xenoAddRigidBodyForce@@YAXHMMM@Z
?xenoAddRigidBodyForce@@YAXHMMMMMM@Z
?xenoAddRigidBodyLinearImpulse@@YAXHMMM@Z
?xenoAddRigidBodyPointImpulse@@YAXHMMMMMM@Z
?xenoAddRigidBodyTorque@@YAXHMMM@Z
?xenoCharacterControllerCrouch@@YAXH@Z
?xenoCharacterControllerJump@@YAXH@Z
?xenoCharacterDisable@@YAXH@Z
?xenoCharacterEnable@@YAXH@Z
?xenoDeleteRigidBody@@YAXH@Z
?xenoEnd@@YAXXZ
?xenoGetCameraFOV@@YAKH@Z
?xenoGetCameraPointX@@YAKH@Z
?xenoGetCameraPointY@@YAKH@Z
?xenoGetCameraPointZ@@YAKH@Z
?xenoGetCameraPositionX@@YAKH@Z
?xenoGetCameraPositionY@@YAKH@Z
?xenoGetCameraPositionZ@@YAKH@Z
?xenoGetCharacterControllerHeadPosition@@YAKH@Z
?xenoGetCharacterControllerPositionX@@YAKH@Z
?xenoGetCharacterControllerPositionY@@YAKH@Z
?xenoGetCharacterControllerPositionZ@@YAKH@Z
?xenoGetCharacterControllerRotation@@YAKH@Z
?xenoGetRigidBodyAllowedPenetrationDepth@@YAKH@Z
?xenoGetRigidBodyAngularDamping@@YAKH@Z
?xenoGetRigidBodyAngularVelocityX@@YAKH@Z
?xenoGetRigidBodyAngularVelocityY@@YAKH@Z
?xenoGetRigidBodyAngularVelocityZ@@YAKH@Z
?xenoGetRigidBodyFriction@@YAKH@Z
?xenoGetRigidBodyGravityFactor@@YAKH@Z
?xenoGetRigidBodyLinearDamping@@YAKH@Z
?xenoGetRigidBodyLinearVelocityX@@YAKH@Z
?xenoGetRigidBodyLinearVelocityY@@YAKH@Z
?xenoGetRigidBodyLinearVelocityZ@@YAKH@Z
?xenoGetRigidBodyMass@@YAKH@Z
?xenoGetRigidBodyMaxAngularVelocity@@YAKH@Z
?xenoGetRigidBodyMaxLinearVelocity@@YAKH@Z
?xenoGetRigidBodyPointVelocityX@@YAKHMMM@Z
?xenoGetRigidBodyPointVelocityY@@YAKHMMM@Z
?xenoGetRigidBodyPointVelocityZ@@YAKHMMM@Z
?xenoGetRigidBodyRestitution@@YAKH@Z
?xenoIsRigidBodyALadder@@YAHH@Z
?xenoMakeCamera@@YAXHH@Z
?xenoMakeCharacterController@@YAXHMM@Z
?xenoMakeCharacterController@@YAXHMMM@Z
?xenoMakeCharacterController@@YAXHMMMM@Z
?xenoMakeCharacterController@@YAXHMMMMM@Z
?xenoMakeCharacterController@@YAXHMMMMMM@Z
?xenoMakeCharacterController@@YAXHMMMMMMM@Z
?xenoMakeRigidBodyDynamicBox@@YAXH@Z
?xenoMakeRigidBodyDynamicBox@@YAXHM@Z
?xenoMakeRigidBodyDynamicCapsule@@YAXH@Z
?xenoMakeRigidBodyDynamicCapsule@@YAXHM@Z
?xenoMakeRigidBodyDynamicCylinder@@YAXH@Z
?xenoMakeRigidBodyDynamicCylinder@@YAXHM@Z
?xenoMakeRigidBodyDynamicSphere@@YAXH@Z
?xenoMakeRigidBodyDynamicSphere@@YAXHM@Z
?xenoMakeRigidBodyStaticBox@@YAXH@Z
?xenoMakeRigidBodyStaticCapsule@@YAXH@Z
?xenoMakeRigidBodyStaticCylinder@@YAXH@Z
?xenoMakeRigidBodyStaticSphere@@YAXH@Z
?xenoMakeRigidBodyStaticTriangleMesh@@YAXH@Z
?xenoMakeVehicle@@YAXHH@Z
?xenoMoveCharacterControllerBackward@@YAXH@Z
?xenoMoveCharacterControllerForward@@YAXH@Z
?xenoMoveCharacterControllerLeft@@YAXH@Z
?xenoMoveCharacterControllerRight@@YAXH@Z
?xenoSetCharacterControllerPosition@@YAXHMMM@Z
?xenoSetCharacterControllerRotation@@YAXHM@Z
?xenoSetGravity@@YAXM@Z
?xenoSetGravity@@YAXMMM@Z
?xenoSetRigidBodyAllowedPenetrationDepth@@YAXHM@Z
?xenoSetRigidBodyAngularDamping@@YAXHM@Z
?xenoSetRigidBodyAngularVelocity@@YAXHMMM@Z
?xenoSetRigidBodyAsLadder@@YAXHH@Z
?xenoSetRigidBodyFriction@@YAXHM@Z
?xenoSetRigidBodyGravityFactor@@YAXHM@Z
?xenoSetRigidBodyLinearDamping@@YAXHM@Z
?xenoSetRigidBodyLinearVelocity@@YAXHMMM@Z
?xenoSetRigidBodyMass@@YAXHM@Z
?xenoSetRigidBodyMaxAngularVelocity@@YAXHM@Z
?xenoSetRigidBodyMaxLinearVelocity@@YAXHM@Z
?xenoSetRigidBodyPosition@@YAXHMMM@Z
?xenoSetRigidBodyRestitution@@YAXHM@Z
?xenoSetRigidBodyRotation@@YAXHMMM@Z
?xenoSetTimeStep@@YAXM@Z
?xenoStart@@YAXH@Z
?xenoStart@@YAXHM@Z
?xenoStart@@YAXHMH@Z
?xenoStart@@YAXXZ
?xenoUpdate@@YAXXZ
?xenoVehicleAccelerate@@YAXHM@Z
?xenoVehicleHandbrake@@YAXH@Z
?xenoVehicleReverse@@YAXH@Z
?xenoVehicleTurn@@YAXHM@Z
When I try to use it in another C++ App like this
#include <windows.h>
class XenoPhysics
{
private:
typedef void (*FunctionFunc)(void);
typedef void (*FunctionFuncFloat)(float);
typedef void (*FunctionFuncInt)(int);
typedef void (*FunctionIntFloatFloatFloat)(int,float,float,float);
HMODULE libInstance;
public:
void LoadLib()
{
this->libInstance = LoadLibrary(L"F:\\xenophysics.dll");
}
void UnloadLib()
{
FreeLibrary(libInstance);
}
void xStart()
{
FunctionFunc curFunc;
curFunc = (FunctionFunc)GetProcAddress(this->libInstance, "?xenoStart@@YAXXZ");
curFunc();
}
void xEnd()
{
FunctionFunc curFunc;
curFunc = (FunctionFunc)GetProcAddress(libInstance, "xenoEnd");
curFunc();
}
void xUpdate()
{
FunctionFunc curFunc;
curFunc = (FunctionFunc)GetProcAddress(libInstance, "xenoUpdate");
curFunc();
}
void xMakeRigidBodyStaticBox(int objid)
{
FunctionFuncInt curFunc;
curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "xenoMakeRigidBodyStaticBox");
curFunc(objid);
}
void xMakeRigidBodyDynamicBox(int objid)
{
FunctionFuncInt curFunc;
curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "xenoMakeRigidBodyDynamicBox");
curFunc(objid);
}
void xSetRigidBodyPosition(int objid, float x, float y, float z)
{
FunctionIntFloatFloatFloat curFunc;
curFunc = (FunctionIntFloatFloatFloat)GetProcAddress(libInstance, "xenoSetRigidBodyPosition");
curFunc(objid, x, y, z);
}
void xSetGravity(float grav)
{
FunctionFuncFloat curFunc;
curFunc = (FunctionFuncFloat)GetProcAddress(libInstance, "xenoSetGravity");
curFunc(grav);
}
};
This is the "wrapper"(or whatever you would call it) class.. To call the functions I'm doing
XenoPhysics * d = new XenoPhysics();
d->LoadLib();
d->xStart();
It then throws the following error at me(Note that it passes the LoadLib() without any errors)
Unhandled exception at 0x50261bc9 in Xeno Test.exe: 0xC0000005: Access violation reading location 0x00000064.
And yes; I've checked that the "curFunc" gets the address, not just a NULL pointer(atleast I think I've checked that)..
Anyone who can help out?
Edit: Forgot the C#.Net code, how stupid of me :3
Here is the C++ CLR DLL "wrapper" I tried to make:
#include <windows.h>
// The following ifdef block is the standard way of creating macros which make exporting
// from a DLL simpler. All files within this DLL are compiled with the XENOWRAPPERWIN32_EXPORTS
// symbol defined on the command line. this symbol should not be defined on any project
// that uses this DLL. This way any other project whose source files include this file see
// XENOWRAPPERWIN32_API functions as being imported from a DLL, whereas this DLL sees symbols
// defined with this macro as being exported.
#ifdef XENOWRAPPERWIN32_EXPORTS
#define XENOWRAPPERWIN32_API __declspec(dllexport)
#else
#define XENOWRAPPERWIN32_API __declspec(dllimport)
#endif
typedef void (*FunctionFunc)();
typedef void (*FunctionFuncFloat)(float);
typedef void (*FunctionFuncInt)(int);
typedef void (*FunctionIntFloatFloatFloat)(int,float,float,float);
// This class is exported from the xeno wrapper win32.dll
class XENOWRAPPERWIN32_API Cxenowrapperwin32 {
public:
Cxenowrapperwin32(void);
HINSTANCE libInstance;
// FunctionFunc curFunc;
// Library base functions
void LoadLib()
{
libInstance = LoadLibrary(L"F:\\xenophysics.dll");
}
void UnloadLib()
{
FreeLibrary(libInstance);
}
// Function calls to the xeno physics
void xStart()
{
FunctionFunc curFunc;
curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoStart@@YAXXZ");
curFunc();
}
void xEnd()
{
FunctionFunc curFunc;
curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoEnd@@YAXXZ");
curFunc();
}
void xUpdate()
{
FunctionFunc curFunc;
curFunc = (FunctionFunc)GetProcAddress(libInstance, "?xenoUpdate@@YAXXZ");
curFunc();
}
void xMakeRigidBodyStaticBox(int objid)
{
FunctionFuncInt curFunc;
curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "?xenoMakeRigidBodyStaticBox@@YAXH@Z");
curFunc(objid);
}
void xMakeRigidBodyDynamicBox(int objid)
{
FunctionFuncInt curFunc;
curFunc = (FunctionFuncInt)GetProcAddress(libInstance, "?xenoMakeRigidBodyDynamicBox@@YAXH@Z");
curFunc(objid);
}
void xSetRigidBodyPosition(int objid, float x, float y, float z)
{
FunctionIntFloatFloatFloat curFunc;
curFunc = (FunctionIntFloatFloatFloat)GetProcAddress(libInstance, "?xenoSetRigidBodyPosition@@YAXHMMM@Z");
curFunc(objid, x, y, z);
}
void xSetGravity(float grav)
{
FunctionFuncFloat curFunc;
curFunc = (FunctionFuncFloat)GetProcAddress(libInstance, "?xenoSetGravity@@YAXM@Z");
curFunc(grav);
}
};
extern XENOWRAPPERWIN32_API int nxenowrapperwin32;
XENOWRAPPERWIN32_API int fnxenowrapperwin32(void);
and here is how I use it in C#.Net
class xeno
{
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?LoadLib@Cxenowrapperwin32@@QAEXXZ")]
public static extern void xLoadLib();
public void LoadLib()
{
xLoadLib();
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?UnloadLib@Cxenowrapperwin32@@QAEXXZ")]
public static extern void xUnloadLib();
public void UnloadLib()
{
xUnloadLib();
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xStart@Cxenowrapperwin32@@QAEXXZ")]
public static extern void xStart();
public void Start()
{
xStart();
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xUpdate@Cxenowrapperwin32@@QAEXXZ")]
public static extern void xUpdate();
public void Update()
{
xUpdate();
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xEnd@Cxenowrapperwin32@@QAEXXZ")]
public static extern void xEnd();
public void End()
{
xEnd();
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xMakeRigidBodyDynamicBox@Cxenowrapperwin32@@QAEXH@Z")]
public static extern void xMakeRigidBodyDynamicBox(int objid);
public void MakeRigidBodyDynamicBox(int id)
{
xMakeRigidBodyDynamicBox(id);
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xMakeRigidBodyStaticBox@Cxenowrapperwin32@@QAEXH@Z")]
public static extern void xMakeRigidBodyStaticBox(int objid);
public void MakeRigidBodyStaticBox(int id)
{
xMakeRigidBodyStaticBox(id);
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xSetGravity@Cxenowrapperwin32@@QAEXM@Z")]
public static extern void xSetGravity(float grav);
public void SetGravity(float g)
{
xSetGravity(g);
}
[DllImport("C:\\Users\\hayer\\Documents\\Visual Studio 2008\\Projects\\xeno wrapper win32\\Debug\\xeno wrapper win32.dll", EntryPoint = "?xSetRigidBodyPosition@Cxenowrapperwin32@@QAEXHMMM@Z")]
public static extern void xSetRigidBodyPosition(int obj, float x, float y, float z);
public void SetRigidBodyPosition(int id, float q, float w, float e)
{
xSetRigidBodyPosition(id, q, w, e);
}
}
And in the main C#.Net program I do
xeno tx = new xeno();
tx.Start();
tx.SetGravity(-1);
tx.MakeRigidBodyStaticBox(ground.Id);
tx.MakeRigidBodyDynamicBox(cube.Id);
tx.SetRigidBodyPosition(cube.Id, 0, 50, 0);
