A complete pgm using the mouse & KB

// A demo of keyboard and mouse input, be sure

// to take a close look at the event handler

// hit escape to exit, or enter to put up a message box

// move the mouse around and press the buttons

// INCLUDES

#define WIN32_LEAN_AND_MEAN

#include <windows.h>

#include <windowsx.h>

#include <stdio.h>

#include <math.h>

// DEFINES

// defines for windows

#define WINDOW_CLASS_NAME "WINCLASS1"

// MACROS

#define KEY_DOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)

#define KEY_UP(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1)

// GLOBALS

HWND main_window_handle = NULL; // save the window handle

// FUNCTIONS

LRESULT CALLBACK WindowProc(HWND hwnd,UINT msg, WPARAM wparam,LPARAM lparam)

{ // this is the main message handler of the system

PAINTSTRUCT ps; // used in WM_PAINT

HDC hdc; // handle to a device context

// what is the message

switch(msg)

{ case WM_CREATE:

{ // do initialization stuff here

return(0);

} break;

case WM_PAINT:

{ // simply validate the window

hdc = BeginPaint(hwnd,&ps);

EndPaint(hwnd,&ps);

return(0);

} break;

case WM_KEYDOWN: // this message contains the virtual code

{ // test for the escape key (exit)

if (wparam == VK_ESCAPE)

{ // the user is trying to kill the app, we could post

// a quit message or send a WM_DESTROY message

// let's do the later

PostMessage(hwnd, WM_DESTROY,0,0);

} // end if

return(0);

} break;

case WM_CHAR: // this message contains the ascii code

{ // a key has been pressed

char buffer[80];

sprintf(buffer,"WM_CHAR: wparam=%c, lparam=%d ",

wparam,lparam);

// print out the key on the screen

hdc = GetDC(hwnd);

// set the colors

SetTextColor(hdc, RGB(0,255,0));

SetBkColor(hdc,RGB(0,0,0));

SetBkMode(hdc,OPAQUE);

// output the message

TextOut(hdc,0,0,buffer,strlen(buffer));

// release dc

ReleaseDC(hwnd,hdc);

return(0);

} break;

case WM_MOUSEMOVE: // whenever the mouse moves this is sent

{ // extract x,y and buttons

int mouse_x = (int)LOWORD(lparam);

int mouse_y = (int)HIWORD(lparam);

int buttons = (int)wparam;

char buffer[80];

sprintf(buffer,"WM_MOUSEMOVE: x=%d y=%d buttons=%d ",

mouse_x,mouse_y,buttons);

// print out the key on the screen

hdc = GetDC(hwnd);

// set the colors

SetTextColor(hdc, RGB(255,0,0));

SetBkColor(hdc,RGB(0,0,0));

SetBkMode(hdc,OPAQUE);

// output the message

TextOut(hdc,0,16,buffer,strlen(buffer));

// release dc

ReleaseDC(hwnd,hdc);

return(0);

} break;

case WM_DESTROY:

{ // kill the application

PostQuitMessage(0);

return(0);

} break;

default:break;

} // end switch

// process any messages that we didn't take care of

return (DefWindowProc(hwnd, msg, wparam, lparam));

} // end WinProc

// ******************** WINMAIN ***********************

int WINAPI WinMain(HINSTANCE hinstance,HINSTANCE hprevinstance,

LPSTR lpcmdline,int ncmdshow)

{

WNDCLASS winclass; // this will hold the class we create

HWND hwnd; // generic window handle

MSG msg; // generic message

// first fill in the window class stucture

winclass.style = CS_DBLCLKS | CS_OWNDC |

CS_HREDRAW | CS_VREDRAW;

winclass.lpfnWndProc = WindowProc;

winclass.cbClsExtra = 0;

winclass.cbWndExtra = 0;

winclass.hInstance = hinstance;

winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);

winclass.hCursor = LoadCursor(NULL, IDC_ARROW);

winclass.hbrBackground = GetStockObject(BLACK_BRUSH);

winclass.lpszMenuName = NULL;

winclass.lpszClassName = WINDOW_CLASS_NAME;

// register the window class

if (!RegisterClass(&winclass))

return(0);

// create the window

if (!(hwnd = CreateWindow(WINDOW_CLASS_NAME, // class

"1^ST Windows Pgm", // title

WS_OVERLAPPEDWINDOW | WS_VISIBLE,

0,0, // x,y

320,200, // width, height

NULL, // handle to parent

NULL, // handle to menu

hinstance,// instance

NULL))) // creation parms

return(0);

// save the window handle in a global

main_window_handle = hwnd;

// enter main event loop

while(1)

{ if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))

{ // test if this is a quit

if (msg.message == WM_QUIT)

break;

// translate any accelerator keys

TranslateMessage(&msg);

// send the message to the window proc

DispatchMessage(&msg);

}

// main game processing goes here

// here's a demo of the KEY_DOWN macro

if (KEY_DOWN(VK_RETURN))

MessageBox(NULL, "You Pressed <ENTER> Didn't You?",

"Asynchronous Keyboard Test",MB_OK);

}

// return to Windows like this

return(msg.wParam);

} // end WinMain