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e0675225989be571b799ac5eb9b1f7adf2d68e21
Client/Library/dxx8/samples/Multimedia/DirectInput/Mouse/mouse.cpp
LGram16 e067522598 Initial commit: ROW Client source code 
Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-29 16:24:34 +09:00

691 lines
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//-----------------------------------------------------------------------------
// File: Mouse.cpp
//
// Desc: The Mouse sample show how to use a DirectInput mouse device and
// the differences between cooperative levels and data styles.
//
// Copyright (c) 1999-2001 Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
#define STRICT
#include <tchar.h>
#include <windows.h>
#include <basetsd.h>
#include <dinput.h>
#include <stdio.h>
#include "resource.h"
//-----------------------------------------------------------------------------
// Function-prototypes
//-----------------------------------------------------------------------------
INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam );
HRESULT OnInitDialog( HWND hDlg );
VOID UpdateUI( HWND hDlg );
HRESULT OnCreateDevice( HWND hDlg );
HRESULT ReadImmediateData( HWND hDlg );
HRESULT ReadBufferedData( HWND hDlg );
VOID FreeDirectInput();
//-----------------------------------------------------------------------------
// Defines, constants, and global variables
//-----------------------------------------------------------------------------
#define SAFE_DELETE(p) { if(p) { delete (p); (p)=NULL; } }
#define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p)=NULL; } }
#define SAMPLE_BUFFER_SIZE 16 // arbitrary number of buffer elements
LPDIRECTINPUT8 g_pDI = NULL;
LPDIRECTINPUTDEVICE8 g_pMouse = NULL;
//-----------------------------------------------------------------------------
// Name: WinMain()
// Desc: Entry point for the application. Since we use a simple dialog for
// user interaction we don't need to pump messages.
//-----------------------------------------------------------------------------
int WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, int )
{
// Display the main dialog box.
DialogBox( hInst, MAKEINTRESOURCE(IDD_MOUSE), NULL, MainDlgProc );
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: MainDlgProc()
// Desc: Handles dialog messages
//-----------------------------------------------------------------------------
INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam )
{
switch( msg )
{
case WM_INITDIALOG:
OnInitDialog( hDlg );
break;
case WM_COMMAND:
switch( LOWORD(wParam) )
{
case IDCANCEL:
EndDialog( hDlg, 0 );
break;
case IDC_EXCLUSIVE:
case IDC_NONEXCLUSIVE:
case IDC_FOREGROUND:
case IDC_BACKGROUND:
case IDC_IMMEDIATE:
case IDC_BUFFERED:
UpdateUI( hDlg );
break;
case IDM_CREATEDEVICE:
case IDM_RELEASEDEVICE:
case IDC_CREATEDEVICE:
if( NULL == g_pMouse )
{
if( FAILED( OnCreateDevice( hDlg ) ) )
{
MessageBox( hDlg, _T("CreateDevice() failed. ")
_T("The sample will now exit. "),
_T("Mouse"), MB_ICONERROR | MB_OK );
FreeDirectInput();
}
SetFocus( GetDlgItem( hDlg, IDC_CREATEDEVICE ) );
}
else
{
FreeDirectInput();
}
UpdateUI( hDlg );
break;
default:
return FALSE; // Message not handled
}
break;
case WM_ENTERMENULOOP:
// Release the device, so if we are in exclusive mode the
// cursor will reappear
if( g_pMouse )
{
g_pMouse->Unacquire();
KillTimer( hDlg, 0 ); // Stop timer, so device is not re-acquired
SetDlgItemText( hDlg, IDC_DATA, TEXT("Unacquired") );
}
break;
case WM_EXITMENULOOP:
// Make sure the device is acquired when coming out of a menu loop
if( g_pMouse )
{
g_pMouse->Acquire();
SetTimer( hDlg, 0, 1000 / 12, NULL ); // Start timer again
}
break;
case WM_ACTIVATE:
if( WA_INACTIVE != wParam && g_pMouse )
{
// Make sure the device is acquired, if we are gaining focus.
g_pMouse->Acquire();
}
break;
case WM_TIMER:
// Update the input device every timer message
{
BOOL bImmediate = ( IsDlgButtonChecked( hDlg, IDC_IMMEDIATE ) == BST_CHECKED );
if( bImmediate )
{
if( FAILED( ReadImmediateData( hDlg ) ) )
{
KillTimer( hDlg, 0 );
MessageBox( NULL, _T("Error Reading Input State. ")
_T("The sample will now exit. "),
_T("Mouse"), MB_ICONERROR | MB_OK );
EndDialog( hDlg, TRUE );
}
}
else
{
if( FAILED( ReadBufferedData( hDlg ) ) )
{
KillTimer( hDlg, 0 );
MessageBox( NULL, _T("Error Reading Input State. ")
_T("The sample will now exit. "),
_T("Mouse"), MB_ICONERROR | MB_OK );
EndDialog( hDlg, TRUE );
}
}
}
break;
case WM_DESTROY:
// Cleanup everything
KillTimer( hDlg, 0 );
FreeDirectInput();
break;
default:
return FALSE; // Message not handled
}
return TRUE; // Message handled
}
//-----------------------------------------------------------------------------
// Name: OnInitDialog()
// Desc: Initialize the DirectInput variables.
//-----------------------------------------------------------------------------
HRESULT OnInitDialog( HWND hDlg )
{
// Load the icon
#ifdef _WIN64
HINSTANCE hInst = (HINSTANCE) GetWindowLongPtr( hDlg, GWLP_HINSTANCE );
#else
HINSTANCE hInst = (HINSTANCE) GetWindowLong( hDlg, GWL_HINSTANCE );
#endif
HICON hIcon = LoadIcon( hInst, MAKEINTRESOURCE( IDI_MAIN ) );
// Set the icon for this dialog.
PostMessage( hDlg, WM_SETICON, ICON_BIG, (LPARAM) hIcon ); // Set big icon
PostMessage( hDlg, WM_SETICON, ICON_SMALL, (LPARAM) hIcon ); // Set small icon
// Check the 'exclusive', 'foreground', and 'immediate' buttons by default.
CheckRadioButton( hDlg, IDC_EXCLUSIVE, IDC_NONEXCLUSIVE, IDC_EXCLUSIVE );
CheckRadioButton( hDlg, IDC_FOREGROUND, IDC_BACKGROUND, IDC_FOREGROUND );
CheckRadioButton( hDlg, IDC_IMMEDIATE, IDC_BUFFERED, IDC_IMMEDIATE );
UpdateUI( hDlg );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: UpdateUI()
// Desc: Enables/disables the UI, and sets the dialog behavior text based on the UI
//-----------------------------------------------------------------------------
VOID UpdateUI( HWND hDlg )
{
TCHAR strExcepted[2048];
BOOL bExclusive;
BOOL bForeground;
BOOL bImmediate;
// Detrimine where the buffer would like to be allocated
bExclusive = ( IsDlgButtonChecked( hDlg, IDC_EXCLUSIVE ) == BST_CHECKED );
bForeground = ( IsDlgButtonChecked( hDlg, IDC_FOREGROUND ) == BST_CHECKED );
bImmediate = ( IsDlgButtonChecked( hDlg, IDC_IMMEDIATE ) == BST_CHECKED );
if( g_pMouse )
{
SetDlgItemText( hDlg, IDC_CREATEDEVICE, TEXT("&Release Device") );
EnableMenuItem( GetMenu( hDlg ), IDM_RELEASEDEVICE, MF_ENABLED );
EnableMenuItem( GetMenu( hDlg ), IDM_CREATEDEVICE, MF_GRAYED );
SetDlgItemText( hDlg, IDC_DATA, TEXT("") );
EnableWindow( GetDlgItem( hDlg, IDC_EXCLUSIVE ), FALSE );
EnableWindow( GetDlgItem( hDlg, IDC_NONEXCLUSIVE ), FALSE );
EnableWindow( GetDlgItem( hDlg, IDC_FOREGROUND ), FALSE );
EnableWindow( GetDlgItem( hDlg, IDC_BACKGROUND ), FALSE );
EnableWindow( GetDlgItem( hDlg, IDC_IMMEDIATE ), FALSE );
EnableWindow( GetDlgItem( hDlg, IDC_BUFFERED ), FALSE );
if( bExclusive )
SetDlgItemText( hDlg, IDC_HELP_TEXT,
TEXT("Press Enter to release the mouse device, ") \
TEXT("and display the cursor again.") );
}
else
{
SetDlgItemText( hDlg, IDC_CREATEDEVICE, TEXT("&Create Device") );
EnableMenuItem( GetMenu( hDlg ), IDM_RELEASEDEVICE, MF_GRAYED );
EnableMenuItem( GetMenu( hDlg ), IDM_CREATEDEVICE, MF_ENABLED );
SetDlgItemText( hDlg, IDC_DATA, TEXT("Device not created. Choose settings and click 'Create Device' then move mouse to see results") );
SetDlgItemText( hDlg, IDC_HELP_TEXT, TEXT("") );
EnableWindow( GetDlgItem( hDlg, IDC_EXCLUSIVE ), TRUE );
EnableWindow( GetDlgItem( hDlg, IDC_NONEXCLUSIVE ), TRUE );
EnableWindow( GetDlgItem( hDlg, IDC_FOREGROUND ), TRUE );
EnableWindow( GetDlgItem( hDlg, IDC_BACKGROUND ), TRUE );
EnableWindow( GetDlgItem( hDlg, IDC_IMMEDIATE ), TRUE );
EnableWindow( GetDlgItem( hDlg, IDC_BUFFERED ), TRUE );
}
// Figure what the user should expect based on the dialog choice
if( !bForeground && bExclusive )
{
_tcscpy( strExcepted, TEXT("For security reasons, background exclusive ") \
TEXT("mouse access is not allowed.\n\n") );
}
else
{
if( bForeground )
{
_tcscpy( strExcepted, TEXT("Foreground cooperative level means that the ") \
TEXT("application has access to data only when in the ") \
TEXT("foreground or, in other words, has the input focus. ") \
TEXT("If the application moves to the background, ") \
TEXT("the device is automatically unacquired, or made ") \
TEXT("unavailable.\n\n") );
}
else
{
_tcscpy( strExcepted, TEXT("Background cooperative level really means ") \
TEXT("foreground and background. A device with a ") \
TEXT("background cooperative level can be acquired ") \
TEXT("and used by an application at any time.\n\n") );
}
if( bExclusive )
{
_tcscat( strExcepted, TEXT("Exclusive mode prevents other applications from ") \
TEXT("also acquiring the device exclusively. The fact ") \
TEXT("that your application is using a device at the ") \
TEXT("exclusive level does not mean that other ") \
TEXT("applications cannot get data from the device. ") \
TEXT("Windows itself requires exclusive access to the ") \
TEXT("mouse because mouse events such as a click on ") \
TEXT("an inactive window could force an application ") \
TEXT("to unacquire the device, with potentially harmful ") \
TEXT("results, such as a loss of data from the input ") \
TEXT("buffer. Therefore, when an application has ") \
TEXT("exclusive access to the mouse, Windows is not ") \
TEXT("allowed any access at all. No mouse messages are ") \
TEXT("generated. A further side effect is that the ") \
TEXT("cursor disappears. When accessing the menu, the sample ") \
TEXT("releases the mouse so the mouse is displayed again.\n\n"));
}
else
{
_tcscat( strExcepted, TEXT("Nonexclusive mode means that other applications ") \
TEXT("can acquire device in exclusive or nonexclusive mode.\n\n"));
}
if( bImmediate )
{
_tcscat( strExcepted, TEXT("Immediate data is a snapshot of the current ") \
TEXT("state of a device. It provides no data about ") \
TEXT("what has happened with the device since the ") \
TEXT("last call, apart from implicit information that ") \
TEXT("you can derive by comparing the current state with ") \
TEXT("the last one. Events in between calls are lost.\n\n") );
}
else
{
_tcscat( strExcepted, TEXT("Buffered data is a record of events that are stored ") \
TEXT("until an application retrieves them. With buffered ") \
TEXT("data, events are stored until you are ready to deal ") \
TEXT("with them. If the buffer overflows, new data is lost.\n\n") );
}
_tcscat( strExcepted, TEXT("The sample will read the mouse 12 times a second. ") \
TEXT("Typically an application would poll the mouse ") \
TEXT("much faster than this, but this slow rate is simply ") \
TEXT("for the purposes of demonstration.") );
}
// Tell the user what to expect
SetDlgItemText( hDlg, IDC_BEHAVIOR, strExcepted );
}
//-----------------------------------------------------------------------------
// Name: OnCreateDevice()
// Desc: Setups a the mouse device using the flags from the dialog.
//-----------------------------------------------------------------------------
HRESULT OnCreateDevice( HWND hDlg )
{
HRESULT hr;
BOOL bExclusive;
BOOL bForeground;
BOOL bImmediate;
DWORD dwCoopFlags;
// Cleanup any previous call first
KillTimer( hDlg, 0 );
FreeDirectInput();
// Detrimine where the buffer would like to be allocated
bExclusive = ( IsDlgButtonChecked( hDlg, IDC_EXCLUSIVE ) == BST_CHECKED );
bForeground = ( IsDlgButtonChecked( hDlg, IDC_FOREGROUND ) == BST_CHECKED );
bImmediate = ( IsDlgButtonChecked( hDlg, IDC_IMMEDIATE ) == BST_CHECKED );
if( bExclusive )
dwCoopFlags = DISCL_EXCLUSIVE;
else
dwCoopFlags = DISCL_NONEXCLUSIVE;
if( bForeground )
dwCoopFlags |= DISCL_FOREGROUND;
else
dwCoopFlags |= DISCL_BACKGROUND;
// Create a DInput object
if( FAILED( hr = DirectInput8Create( GetModuleHandle(NULL), DIRECTINPUT_VERSION,
IID_IDirectInput8, (VOID**)&g_pDI, NULL ) ) )
return hr;
// Obtain an interface to the system mouse device.
if( FAILED( hr = g_pDI->CreateDevice( GUID_SysMouse, &g_pMouse, NULL ) ) )
return hr;
// Set the data format to "mouse format" - a predefined data format
//
// A data format specifies which controls on a device we
// are interested in, and how they should be reported.
//
// This tells DirectInput that we will be passing a
// DIMOUSESTATE2 structure to IDirectInputDevice::GetDeviceState.
if( FAILED( hr = g_pMouse->SetDataFormat( &c_dfDIMouse2 ) ) )
return hr;
// Set the cooperativity level to let DirectInput know how
// this device should interact with the system and with other
// DirectInput applications.
hr = g_pMouse->SetCooperativeLevel( hDlg, dwCoopFlags );
if( hr == DIERR_UNSUPPORTED && !bForeground && bExclusive )
{
FreeDirectInput();
MessageBox( hDlg, _T("SetCooperativeLevel() returned DIERR_UNSUPPORTED.\n")
_T("For security reasons, background exclusive mouse\n")
_T("access is not allowed."),
_T("Mouse"), MB_OK );
return S_OK;
}
if( FAILED(hr) )
return hr;
if( !bImmediate )
{
// IMPORTANT STEP TO USE BUFFERED DEVICE DATA!
//
// DirectInput uses unbuffered I/O (buffer size = 0) by default.
// If you want to read buffered data, you need to set a nonzero
// buffer size.
//
// Set the buffer size to SAMPLE_BUFFER_SIZE (defined above) elements.
//
// The buffer size is a DWORD property associated with the device.
DIPROPDWORD dipdw;
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = SAMPLE_BUFFER_SIZE; // Arbitary buffer size
if( FAILED( hr = g_pMouse->SetProperty( DIPROP_BUFFERSIZE, &dipdw.diph ) ) )
return hr;
}
// Acquire the newly created device
g_pMouse->Acquire();
// Set a timer to go off 12 times a second, to read input
// Note: Typically an application would poll the mouse
// much faster than this, but this slow rate is simply
// for the purposes of demonstration
SetTimer( hDlg, 0, 1000 / 12, NULL );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: ReadImmediateData()
// Desc: Read the input device's state when in immediate mode and display it.
//-----------------------------------------------------------------------------
HRESULT ReadImmediateData( HWND hDlg )
{
HRESULT hr;
TCHAR strNewText[128] = TEXT(""); // Output string
DIMOUSESTATE2 dims2; // DirectInput mouse state structure
if( NULL == g_pMouse )
return S_OK;
// Get the input's device state, and put the state in dims
ZeroMemory( &dims2, sizeof(dims2) );
hr = g_pMouse->GetDeviceState( sizeof(DIMOUSESTATE2), &dims2 );
if( FAILED(hr) )
{
// DirectInput may be telling us that the input stream has been
// interrupted. We aren't tracking any state between polls, so
// we don't have any special reset that needs to be done.
// We just re-acquire and try again.
// If input is lost then acquire and keep trying
hr = g_pMouse->Acquire();
while( hr == DIERR_INPUTLOST )
hr = g_pMouse->Acquire();
// Update the dialog text
if( hr == DIERR_OTHERAPPHASPRIO ||
hr == DIERR_NOTACQUIRED )
SetDlgItemText( hDlg, IDC_DATA, TEXT("Unacquired") );
// hr may be DIERR_OTHERAPPHASPRIO or other errors. This
// may occur when the app is minimized or in the process of
// switching, so just try again later
return S_OK;
}
// The dims structure now has the state of the mouse, so
// display mouse coordinates (x, y, z) and buttons.
_stprintf( strNewText, TEXT("(X=% 3.3d, Y=% 3.3d, Z=% 3.3d) B0=%c B1=%c B2=%c B3=%c B4=%c B5=%c B6=%c B7=%c"),
dims2.lX, dims2.lY, dims2.lZ,
(dims2.rgbButtons[0] & 0x80) ? '1' : '0',
(dims2.rgbButtons[1] & 0x80) ? '1' : '0',
(dims2.rgbButtons[2] & 0x80) ? '1' : '0',
(dims2.rgbButtons[3] & 0x80) ? '1' : '0',
(dims2.rgbButtons[4] & 0x80) ? '1' : '0',
(dims2.rgbButtons[5] & 0x80) ? '1' : '0',
(dims2.rgbButtons[6] & 0x80) ? '1' : '0',
(dims2.rgbButtons[7] & 0x80) ? '1' : '0');
// Get the old text in the text box
TCHAR strOldText[128];
GetDlgItemText( hDlg, IDC_DATA, strOldText, 127 );
// If nothing changed then don't repaint - avoid flicker
if( 0 != lstrcmp( strOldText, strNewText ) )
SetDlgItemText( hDlg, IDC_DATA, strNewText );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: ReadBufferedData()
// Desc: Read the input device's state when in buffered mode and display it.
//-----------------------------------------------------------------------------
HRESULT ReadBufferedData( HWND hDlg )
{
TCHAR strNewText[128] = TEXT("");
DIDEVICEOBJECTDATA didod[ SAMPLE_BUFFER_SIZE ]; // Receives buffered data
DWORD dwElements;
DWORD i;
HRESULT hr;
if( NULL == g_pMouse )
return S_OK;
dwElements = SAMPLE_BUFFER_SIZE;
hr = g_pMouse->GetDeviceData( sizeof(DIDEVICEOBJECTDATA),
didod, &dwElements, 0 );
if( hr != DI_OK )
{
// We got an error or we got DI_BUFFEROVERFLOW.
//
// Either way, it means that continuous contact with the
// device has been lost, either due to an external
// interruption, or because the buffer overflowed
// and some events were lost.
//
// Consequently, if a button was pressed at the time
// the buffer overflowed or the connection was broken,
// the corresponding "up" message might have been lost.
//
// But since our simple sample doesn't actually have
// any state associated with button up or down events,
// there is no state to reset. (In a real game, ignoring
// the buffer overflow would result in the game thinking
// a key was held down when in fact it isn't; it's just
// that the "up" event got lost because the buffer
// overflowed.)
//
// If we want to be cleverer, we could do a
// GetDeviceState() and compare the current state
// against the state we think the device is in,
// and process all the states that are currently
// different from our private state.
hr = g_pMouse->Acquire();
while( hr == DIERR_INPUTLOST )
hr = g_pMouse->Acquire();
// Update the dialog text
if( hr == DIERR_OTHERAPPHASPRIO ||
hr == DIERR_NOTACQUIRED )
SetDlgItemText( hDlg, IDC_DATA, TEXT("Unacquired") );
// hr may be DIERR_OTHERAPPHASPRIO or other errors. This
// may occur when the app is minimized or in the process of
// switching, so just try again later
return S_OK;
}
if( FAILED(hr) )
return hr;
// Study each of the buffer elements and process them.
//
// Since we really don't do anything, our "processing"
// consists merely of squirting the name into our
// local buffer.
for( i = 0; i < dwElements; i++ )
{
// this will display then scan code of the key
// plus a 'D' - meaning the key was pressed
// or a 'U' - meaning the key was released
switch( didod[ i ].dwOfs )
{
case DIMOFS_BUTTON0:
_tcscat( strNewText, TEXT("B0") );
break;
case DIMOFS_BUTTON1:
_tcscat( strNewText, TEXT("B1") );
break;
case DIMOFS_BUTTON2:
_tcscat( strNewText, TEXT("B2") );
break;
case DIMOFS_BUTTON3:
_tcscat( strNewText, TEXT("B3") );
break;
case DIMOFS_X:
_tcscat( strNewText, TEXT("X") );
break;
case DIMOFS_Y:
_tcscat( strNewText, TEXT("Y") );
break;
case DIMOFS_Z:
_tcscat( strNewText, TEXT("Z") );
break;
default:
_tcscat( strNewText, TEXT("") );
}
switch( didod[ i ].dwOfs )
{
case DIMOFS_BUTTON0:
case DIMOFS_BUTTON1:
case DIMOFS_BUTTON2:
case DIMOFS_BUTTON3:
if( didod[ i ].dwData & 0x80 )
_tcscat( strNewText, TEXT("U ") );
else
_tcscat( strNewText, TEXT("D ") );
break;
case DIMOFS_X:
case DIMOFS_Y:
case DIMOFS_Z:
{
TCHAR strCoordValue[20];
wsprintf( strCoordValue, TEXT("%d "), didod[ i ].dwData );
_tcscat( strNewText, strCoordValue );
break;
}
}
}
// Get the old text in the text box
TCHAR strOldText[128];
GetDlgItemText( hDlg, IDC_DATA, strOldText, 127 );
// If nothing changed then don't repaint - avoid flicker
if( 0 != lstrcmp( strOldText, strNewText ) )
SetDlgItemText( hDlg, IDC_DATA, strNewText );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: FreeDirectInput()
// Desc: Initialize the DirectInput variables.
//-----------------------------------------------------------------------------
VOID FreeDirectInput()
{
// Unacquire the device one last time just in case
// the app tried to exit while the device is still acquired.
if( g_pMouse )
g_pMouse->Unacquire();
// Release any DirectInput objects.
SAFE_RELEASE( g_pMouse );
SAFE_RELEASE( g_pDI );
}
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