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#include <windows.h>
HINSTANCE hInst;
HWND wndHandle;
bool initWindow(HINSTANCE hInstance);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
/* winmain.cpp function that initializes the window and the message loop that checks for user input or
system messages, the program will then call the TranslateMessage and DispatchMessage functions.*/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
//Intialize the window
if (!initWindow (hInstance) )
return false;
//Main message loop
MSG msg;
ZeroMemory (&msg, sizeof (msg) );
while(msg.message!=WM_QUIT)
{
while (GetMessage(&msg, wndHandle, 0, 0) )
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return(int)msg.wParam;
}
/* Creating the class for which the window will be intialized. Windows Programming requires a class to be registered before
a window is created. */
bool initWindows(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
//How the window will look to the system
wcex.cbSize=sizeof(WNDCLASSEX); //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 for this 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", //the window class to use
"DirectXExample", //the title bar text
WS_OVERLAPPEDWINDOW, //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)
{
// 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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