WM_CHAR 获取键盘按下的字符
// DEMO3_11.CPP - WM_CHAR demo
// INCLUDES ///
#define WIN32_LEAN_AND_MEAN // just say no to MFC
#include
#include
#include
#include
#include
#include
// DEFINES
// defines for windows
#define WINDOW_CLASS_NAME "WINCLASS1"
// GLOBALS
HWND main_window_handle = NULL; // globally track main window
HINSTANCE hinstance_app = NULL; // globally track hinstance
// 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
char buffer[80]; // used to print strings
// what is the message
switch(msg)
{
case WM_CREATE:
{
// do initialization stuff here
// return success
return(0);
} break;
case WM_CHAR:
{
// get the character
char ascii_code = wparam; //获取按下的ASCII码
unsigned int key_state = lparam; //获取按下的键状态
// get a graphics context
hdc = GetDC(hwnd);
// set the foreground color to green
SetTextColor(hdc, RGB(0,255,0));
// set the background color to black
SetBkColor(hdc, RGB(0,0,0));
// set the transparency mode to OPAQUE
SetBkMode(hdc, OPAQUE);
// print the ascii code and key state
sprintf(buffer,"WM_CHAR: Character = %c ",ascii_code);
TextOut(hdc, 0,0, buffer, strlen(buffer));//输入
sprintf(buffer,"Key State = 0X%X ",key_state);
TextOut(hdc, 0,16, buffer, strlen(buffer));//输入
// release the dc back
ReleaseDC(hwnd, hdc);
} break;
case WM_PAINT:
{
// simply validate the window
hdc = BeginPaint(hwnd,&ps);
// end painting
EndPaint(hwnd,&ps);
// return success
return(0);
} break;
case WM_DESTROY:
{
// kill the application, this sends a WM_QUIT message
PostQuitMessage(0);
// return success
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)
{
WNDCLASSEX 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.cbSize = sizeof(WNDCLASSEX);
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 = (HBRUSH)GetStockObject(BLACK_BRUSH);
winclass.lpszMenuName = NULL;
winclass.lpszClassName = WINDOW_CLASS_NAME;
winclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
// save hinstance in global
hinstance_app = hinstance;
// register the window class
if (!RegisterClassEx(&winclass))
return(0);
// create the window
if (!(hwnd = CreateWindowEx(NULL, // extended style
WINDOW_CLASS_NAME, // class
"WM_CHAR Demo", // title
WS_OVERLAPPEDWINDOW | WS_VISIBLE,
0,0, // initial x,y
400,300, // initial width, height
NULL, // handle to parent
NULL, // handle to menu
hinstance,// instance of this application
NULL))) // extra creation parms
return(0);
// save main window handle
main_window_handle = hwnd;
// enter main event loop, but this time we use PeekMessage()
// instead of GetMessage() to retrieve messages
while(TRUE)
{
// test if there is a message in queue, if so get it
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);
} // end if
// main game processing goes here
// Game_Main(); // or whatever your loop is called
} // end while
// return to Windows like this
return(msg.wParam);
} // end WinMain
///