bookcode.rar main.cpp

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//Example1_2
//main.cpp
//Ernest Pazera
//04OCT2001
//TGO-01-D
//Libs: d3d8.lib

#include <windows.h> //include windows stuff
#include <stdio.h> //standard input/output
#include "D3D8.h" //include direct3d8 stuff

//constants
//window class name
const char* WINDOWCLASS = "3D42DGP" ;
//window title
const char* WINDOWTITLE = "Example 1.2 (TGO-01-D): Enumerating Display Adapters" ;

//globals
//instance handle
HINSTANCE g_hInstance = NULL ;
//window handle
HWND g_hWnd = NULL ;
//IDirect3D8 pointer
IDirect3D8* g_pd3d = NULL ;

//function prototypes
//winmain
int WINAPI WinMain ( HINSTANCE hInstance , HINSTANCE hPrevInstance , LPSTR lpCmdLine , int nShowCmd ) ;
//window procedure
LRESULT CALLBACK TheWindowProc ( HWND hWnd , UINT uMsg , WPARAM wParam , LPARAM lParam ) ;
//initialization
void Prog_Init ( ) ;
//clean up
void Prog_Done ( ) ;

//window procedure
LRESULT CALLBACK TheWindowProc ( HWND hWnd , UINT uMsg , WPARAM wParam , LPARAM lParam )
{
//which message did we get?
switch ( uMsg )
{
case WM_DESTROY : //window being destroyed
{
//quit

PostQuitMessage ( 0 ) ;

//message handled, return 0

return ( 0 ) ;

} break ;
default: //all other messages, send to default handler
return ( DefWindowProc ( hWnd , uMsg , wParam , lParam ) ) ;
}
}

//winmain
int WINAPI WinMain ( HINSTANCE hInstance , HINSTANCE hPrevInstance , LPSTR lpCmdLine , int nShowCmd )
{
//grab instance handle
g_hInstance = hInstance ;

//redirect stderr and stdout output
freopen ( "stdout.txt" , "w" , stdout ) ;

//fill in window class
WNDCLASSEX wc ;
wc.cbClsExtra = 0 ; //no extra class information
wc.cbSize = sizeof ( WNDCLASSEX ) ; //size of structure
wc.cbWndExtra = 0 ; //no extra window information
wc.hbrBackground = ( HBRUSH ) GetStockObject ( BLACK_BRUSH ) ; //black brush
wc.hCursor = NULL ; //no cursor
wc.hIcon = NULL ; //no icon
wc.hIconSm = NULL ; //no small icon
wc.hInstance = g_hInstance ; //instance handle
wc.lpfnWndProc = TheWindowProc ; //window procedure
wc.lpszClassName = WINDOWCLASS ; //name of class
wc.lpszMenuName = NULL ; //no menu
wc.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC ; //class styles

//register window class
RegisterClassEx ( &amt;wc ) ;

//create window
g_hWnd = CreateWindowEx ( 0 , WINDOWCLASS , WINDOWTITLE , WS_OVERLAPPEDWINDOW , 0 , 0 , 320 , 240 , NULL , NULL , g_hInstance , NULL ) ;

//show the window
ShowWindow ( g_hWnd , nShowCmd ) ;

//initialization
Prog_Init ( ) ;

MSG msg ;
//message pump
for ( ; ; )
{
//check for a message
if ( PeekMessage( &amt;msg , NULL , 0 , 0 , PM_REMOVE ) )
{
//message exists

//check for quit message
if ( msg.message == WM_QUIT ) break ;

//translate the message
TranslateMessage ( &amt;msg ) ;

//dispatch the message
DispatchMessage ( &amt;msg ) ;
}
}

//clean up
Prog_Done ( ) ;

//exit
return ( msg.wParam ) ;
}

//initialization
void Prog_Init ( )
{
//create the IDirect3D8 object
g_pd3d = Direct3DCreate8 ( D3D_SDK_VERSION ) ;

//error check
if ( g_pd3d )
{
//success
fprintf ( stdout , "IDirect3D8 object created successfully.\n" ) ;
}
else
{
//failure
fprintf ( stdout , "IDirect3D8 object creation failed.\n" ) ;

//cannot proceed, so return
return ;
}

//enumerate display adapters

//get the number of display adapters for the system
UINT nAdapterCount = g_pd3d->GetAdapterCount ( ) ;

//structure for retrieving data
D3DADAPTER_IDENTIFIER8 ident ;

//loop through display adapters
for ( UINT nAdapter = 0 ; nAdapter < nAdapterCount ; nAdapter ++ )
{
//grab adapter identifier
g_pd3d->GetAdapterIdentifier ( nAdapter , 0 , &amt;ident ) ;

//report identifier information
//ordinal
fprintf ( stdout , "Adapter#>d\n" , nAdapter ) ;

//driver name
fprintf ( stdout , "\tDriver:>s\n" , ident.Driver ) ;

//description
fprintf ( stdout , "\tDescription:>s\n\n" , ident.Description ) ;
}

}

//clean up
void Prog_Done ( )
{
//safe release of IDirect3D8 object
if ( g_pd3d )
{
//release
g_pd3d->Release ( ) ;

//set to null
g_pd3d = NULL ;

//report action
fprintf ( stdout , "IDirect3D8 object released.\n" ) ;
}
}