Windows Programming. 1 st Week, 2011

Transcription

1 Windows Programming 1 st Week, 2011 시작하기 Visual Studio 2008

2 새프로젝트 파일 새로만들기 프로젝트 Visual C++ 프로젝트 Win32 프로젝트 빈프로젝트 응용프로그램설정

3 Prac01 솔루션 새항목추가

4 C++ 파일 main.cpp

5 main0.cpp cpp 다운로드 솔루션빌드

6 오류 Unicode vs. Multi-Byte SBCS (Single Byte Character Set) ASCII code: 1 byte character set DBCS (Double Byte Character Set) Korean MBCS (Multi Byte Character Set) SBCS + DBCS: ~ Windows 9x WBCS (Wide Byte Character Set) Unicode Unicode: Windows 2000 ~

7 프로젝트속성 멀티바이트문자집합사용

8 솔루션빌드 F7 디버깅시작 F5 실행 디버깅하지않고시작 Ctrl + F5 디버그툴 실행결과

9 #include <windows.h> HWND MyMWindowHandle = 0; main.cpp cpp 구조 LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM ); int WINAPI WinMain( HINSTANCE hinstance, HINSTANCE, LPSTR, int nshowcmd ) { // Create the main window } // Main message loop LRESULT CALLBACK WndProc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { } Includes, Global Variables, and Prototypes

10 Includes, Global Variables, and Prototypes Includes #include <windows.h> Obtaining the structures, types, and function declarations needed for using the basic elements of the Win32 API Global Variables HWND MyMWindowHandle = 0; Handle to a window to refer our main application window Prototypes LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam); Our main window s window procedure WinMain ( ) Creation

11 WinMain ( ) The Windows equivalent to the main() in normal C++ programming int WINAPI WinMain( HINSTANCE hinstance, HINSTANCE hprevinstance, PSTR pcmdline, int nshowcmd ); hinstance: Handle to the current application instance hprevinstance: Not used in Win32 programming lpcmdline: The command line argument string used to run the program ncmdshow: Specifying how the application should be displayed WNDCLASS (1) Describing our window with WNDCLSS typedef struct _WNDCLASS { UINT style; WNDPROC lpfnwndproc; int cbclsextra; int cbwndextra; HANDLE hinstance; HICON hicon; HCURSOR hcursor; HBRUSH hbrbackground; LPCTSTR lpszmenuname; LPCTSTR lpszclassname; } WNDCLASS; style: Specifying the class style lpfnwndproc: Pointer to the window procedure function cbclsextra and cbwndextra: Extra memory slots

12 WNDCLASS (2) hinstance: A handle to our application instance hicon: Specifying a handle to an icon hcursor: Specifying a handle to a cursor hbrbackground: Specifying the background of the client area of the window lpszmenuname: Specifying the window s menu lpszclassname: Specifying the name of the window class structure Class Styles

13 LoadIcon( ) LoadCursor( )

14 GetStockObject( ) Creating the Window (1) Creating a window based on WNDCLASS description HWND CreateWindow( LPCTSTR lpclassname, LPCTSTR lpwindowname, DWORD dwstyle, int x, int y, int nwidth, int nheight, HWND hwndparent, HMENU hmenu, HANDLE hinstance, PVOID lpparam ); lpclassname: The name of the registered WNDCLASS structure t lpwindowname: The name we want to give our window

15 Creating the Window (2) dwstyle: Defining the style of window x: The position at the top-left corner of the window y: The position at the top-left corner of the window nwidth: The width of the window in pixels nheight: The height of the window in pixels hwndparent: Handle to a window that is to be the parent of this window hmenu: A handle to menu hinstance: Handle to the application lpparam: A pointer to user-defined data WinMain ( ) Message Loop

16 The Message Loop (1) The message structure that represents a Windows message typedef struct tagmsg { HWND hwnd; UINT message; WPARAM wparam; LPARAM lparam; DWORD time; POINT pt; } MSG; hwnd: The handle to the window message: A predefined constant value identifying the message (e.g. WM_QUIT) wparam and lparam: Et Extra if information time: The time the message was posted pt: The (x, y) coordinates of the mouse cursor The Message Loop (2) Entering the message loop while( GetMessage( &msg, 0, 0, 0 ) ) { TranslateMessage( &msg ); DispatchMessage( &msg ); } GetMessage() Returning true unless a WM_QUIT Retrieving a message from the message queue Filling in members of MSG structure TranslateMessage() Performing some keyboard translation and virtual key messages to character messages specifically DispatchMessage() Dispatching the message off to the appropriate window proc.

17 The Window Procedure The Window Procedure (1) Executing in response to a message our window receives LRESULT CALLBACK WndProc( ); HWND hwnd, UINT umsg, WPARAM wparam, LPARAM lparam Callback function: Windows will be calling this function outside of the code space of the program hwnd: The handle to the window receiving the message umsg: A predefined value that identifies the particular message (e.g. WM_QUIT) wparam and lparam: Extra information about the message

18 The Window Procedure (2) Handling these messages: switch( msg ) { case WM_LBUTTONDOWN: MessageBox( NULL, "Hello, World", "Hello", " MB_OK ); break; case WM_KEYDOWN: if( wparam == VK_ESCAPE ) DestroyWindow( MyMWindowHandle ); break; case WM_DESTROY: PostQuitMessage( 0 ); break; default: return DefWindowProc( hwnd, msg, wparam, lparam ); } WM_LBUTTONDOWN: clicking left mouse button WM_KEYDOWN: pressing a key (c.f. virtual key code) WM_DESTROY: destroying the window The Window Procedure (3) Default window procedure return DefWindowProc( hwnd, msg, wparam, lparam ); Win32 API function Using default behavior for all other messages (e.g. minimizing, maximizing, resizing, and closing a window)

19 The Message Box Function Win32 API function int MessageBox( HWND hwnd, LPCTSTR lptext, LPCTSTR lpcaption, UINT utype ); hwnd: Handle of owner window (may specify null) lptext: Text to put in the message box lpcaption: : Text for the title of the message box utype: Style of the message box MessageBox( NULL, "Hello, World", "Hello", MB_OK ); MessageBox( )

20 연습문제 Application Window 의배경색, 아이콘, 커서를변경시키시오. Application Window 의크기를 800x600 으로변경시키시오. Application Window 의제목을자신의학번과이름으로변경시키시오. 좌측마우스버튼을클릭했을때생성되는 Message Box를다음과같이변경시키시오.