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// Include the Windows header file that’s needed for all Windows applications
#include <windows.h>
HINSTANCE hInst; // global handle to hold the application instance
HWND wndHandle; // global variable to hold the window handle
// forward declarations
bool initWindow( HINSTANCE hInstance );
LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM );
// This is winmain, the main entry point for Windows applications
int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPTSTR lpCmdLine, int nCmdShow )
{
// Initialize the window
if ( !initWindow( hInstance ) )
return false;
// main message loop:
MSG msg;
ZeroMemory( &msg, sizeof( msg ) );
while( msg.message!=WM_QUIT )
{
// Check the message queue
while (GetMessage(&msg, wndHandle, 0, 0) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
}
return (int) msg.wParam;
}
/******************************************************************************
* bool initWindow( HINSTANCE hInstance )
* initWindow registers the window class for the application, creates the window
******************************************************************************/
bool initWindow( HINSTANCE hInstance )
{
WNDCLASSEX wcex;
// Fill in the WNDCLASSEX structure. This describes how the window
// will look to the system
wcex.cbSize = sizeof(WNDCLASSEX); // the size of the structure
wcex.style = CS_HREDRAW | CS_VREDRAW; // the class style
wcex.lpfnWndProc = (WNDPROC)WndProc; // the window procedure callback
wcex.cbClsExtra = 0; // extra bytes to allocate for this class
wcex.cbWndExtra = 0; // extra bytes to allocate for this instance
wcex.hInstance = hInstance; // handle to the application instance
wcex.hIcon = 0; // icon to associate with the application
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);// the default cursor
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); // the background color
wcex.lpszMenuName . = NULL; // the resource name for the menu
wcex.lpszClassName = “DirectXExample”; // the class name being created
wcex.hIconSm = 0; // the handle to the small icon
RegisterClassEx(&wcex);
// Create the window
wndHandle = CreateWindow(
“DirectXExample”,
“DirectXExample”,
WS_OVERLAPPEDWINDOW,
// the window class to use
// the title bar text
// the window style
CW_USEDEFAULT, // the starting x coordinate
CW_USEDEFAULT, // the starting y coordinate
640, // the pixel width of the window
480, // the pixel height of the window
NULL, // the parent window; NULL for desktop
NULL, // the menu for the application; NULL for
// none
hInstance, // the handle to the application instance
NULL); // no values passed to the window
// Make sure that the window handle that is created is valid
if (!wndHandle)
return false;
// Display the window on the screen
ShowWindow(wndHandle, SW_SHOW);
UpdateWindow(wndHandle);
return true;
}
/******************************************************************************
* LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
* LPARAM lParam)
* The window procedure
******************************************************************************/
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
// Check any available messages from the queue
switch (message)
{
case WM_DESTROY:
PostQuitMessage(0);
break;
}
// Always return the message to the default window
// procedure for further processing
return DefWindowProc(hWnd, message, wParam, lParam);
}
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