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nickwinters

DirectInput troubles (losing the mouse and huge values)

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I have two problems with DirectInput. First, on every poll I make, I lose the mouse so have to aquire it again. What could be causing this? I have the coop mode set to foreground and exclusive. On top of this, I get strange numbers of my mouse values, like 84215040, and -1684300928. How do I make sense of these values? Also, the X and Y values are always the same. Thanks. -Nick

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Here's Mouse.h
[source="C++"]
#include <dinput.h>

#include "Exception.h"
#include "NLogFile.h"
#include "Keys.h"
#include "Vector3f.h"

#pragma once

class Mouse
{

private:
LPDIRECTINPUT8 g_lpDI;
LPDIRECTINPUTDEVICE8 g_lpDIDevice;
DIMOUSESTATE2 mouse_state;
Vector3f mousePosition;


public:
Mouse(void);
~Mouse(void);
void Initialize(HINSTANCE hInstance, HWND hWnd);
void CleanUp();
bool ButtonDown(int button);
void SetCursorPosition(Vector3f positon);
Vector3f GetCursorPosition();
void PollMouse();
};




Mouse.cpp
[source="C++"]
#include ".\mouse.h"

Mouse::Mouse(void)
{

}

Mouse::~Mouse(void)
{
}

void Mouse::Initialize(HINSTANCE hInstance, HWND hWnd)
{
HRESULT hr;

hr = DirectInput8Create(hInstance, DIRECTINPUT_VERSION,
IID_IDirectInput8, (void**)&g_lpDI, NULL);

if FAILED(hr)
{
throw Exception("Could not initiate DirectInput");
}

hr = g_lpDI->CreateDevice(GUID_SysMouse, &g_lpDIDevice, NULL);
if FAILED(hr)
{
CleanUp();
throw Exception("Could not create Mouse");
}

hr = g_lpDIDevice->SetDataFormat(&c_dfDIMouse);

if FAILED(hr)
{
CleanUp();
throw Exception("Could not set data format");
}

hr = g_lpDIDevice->SetCooperativeLevel(hWnd,
DISCL_FOREGROUND | DISCL_EXCLUSIVE);


if FAILED(hr)
{
CleanUp();
throw Exception("Could not set cooperation level");
}

if (g_lpDIDevice)
{
g_lpDIDevice->Acquire();
}
}

void Mouse::CleanUp(void)
{
if(g_lpDI)
{
g_lpDI->Release();
}
if(g_lpDIDevice)
{
g_lpDIDevice->Unacquire();
g_lpDIDevice->Release();
}
}

void Mouse::PollMouse()
{
HRESULT hr;

hr = g_lpDIDevice->GetDeviceState(sizeof(DIMOUSESTATE2), (LPVOID)&mouse_state);
if FAILED(hr)
{
NLogFile * lf=NLogFile::getInstance();
lf->write("Lost the Mouse");
g_lpDIDevice->Acquire();
//throw Exception("Mouse Lost");
}
mousePosition.x+=mouse_state.lX;
mousePosition.y+=mouse_state.lY;
mousePosition.z+=mouse_state.lZ;

}

bool Mouse::ButtonDown(int button)
{
PollMouse();
return (mouse_state.rgbButtons[button] & 0x80)==0;

}

Vector3f Mouse::GetCursorPosition()
{
return mousePosition;
}

void Mouse::SetCursorPosition(Vector3f position)
{
mousePosition=position;
}




Poll is called at the beginning of every update (50 calls/second).

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I don't know if it is the problem, but since you're using DIMOUSESTATE2

g_lpDIDevice->GetDeviceState(sizeof(DIMOUSESTATE2), (LPVOID)&mouse_state);

you should change

hr = g_lpDIDevice->SetDataFormat(&c_dfDIMouse);

to

hr = g_lpDIDevice->SetDataFormat(&c_dfDIMouse2);

I hope that solves your problem

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