C++에서 메모장 개발

Question

C++ 메뉴로 메모장을 개발하려고합니다. 코드는 다음과 같습니다.

#include <windows.h> 
#define IDI_APP_ICON 1 
#define IDD_ABOUT 100 
#define IDC_STATIC 101 
#define IDM_MAINMENU 200 
#define IDM_FILE_NEW 201 
#define IDM_FILE_OPEN 203 
#define IDM_FILE_SAVE 204 
#define IDM_FILE_EXIT 205 
#define IDM_HELP_ABOUT 206 

class MainWindow 
{ 
public: 
MainWindow(HINSTANCE hInstance); 
~MainWindow(); 
static LRESULT CALLBACK MainWndProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM  lParam); 

static void OnCommand(HWND hwnd, int id, HWND hCtl, UINT codeNotify); 
bool Run(int nCmdShow); 

private: 
WNDCLASSEX m_wndClass; 
static HINSTANCE m_hInstance; 
HWND m_hwnd; 
static char m_szClassName[]; 
}; 

class AboutDialog 
{ 
public: 
AboutDialog(); 
~AboutDialog(); 
static BOOL CALLBACK DialogProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam); 
int Run(HINSTANCE hInstance, HWND hParent); 

private: 
HWND m_hwnd; 
}; 

AboutDialog::AboutDialog() 
{ 
} 

AboutDialog::~AboutDialog() 
{ 
} 

// Function: Run 
// Returns: Result of the DialogBox 
int AboutDialog::Run(HINSTANCE hInstance, HWND hParent) 

{ 
int retval = DialogBox(
    hInstance, 
    MAKEINTRESOURCE(IDD_ABOUT), // Dialog template 
    hParent, // Pointer to parent hwnd 
    DialogProc); 

} 
BOOL CALLBACK 
AboutDialog::DialogProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) 
{ 
int retVal = false; 
switch(msg) 
{ 
case WM_INITDIALOG: 
    retVal = true; 
    break; 
case WM_COMMAND: 
    if(LOWORD(wParam)== IDOK) 
     EndDialog(hwnd, TRUE); 
    break; 
case WM_CLOSE: 
    EndDialog(hwnd, TRUE); 
    break; 
} 
return retVal; 
} 


char MainWindow::m_szClassName[] = "DrawLite"; 
HINSTANCE MainWindow::m_hInstance = NULL; 

MainWindow::MainWindow(HINSTANCE hInstance) 
{ 
m_hInstance = hInstance; // Save Instance handle 

m_wndClass.cbSize = sizeof(WNDCLASSEX); // Must always be sizeof(WNDCLASSEX) 
m_wndClass.style = CS_DBLCLKS; // Class styles 
m_wndClass.lpfnWndProc = MainWndProc; // Pointer to callback procedure 
m_wndClass.cbClsExtra = 0; 
m_wndClass.cbWndExtra = 0; 
m_wndClass.hInstance = hInstance; 
m_wndClass.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_APP_ICON)); 
m_wndClass.hCursor = LoadCursor(NULL, IDC_ARROW); 
m_wndClass.hbrBackground = (HBRUSH) (COLOR_WINDOW); 
m_wndClass.lpszMenuName = MAKEINTRESOURCE(IDM_MAINMENU); 
m_wndClass.lpszClassName = m_szClassName; 
m_wndClass.hIconSm = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_APP_ICON)); 
} 


MainWindow::~MainWindow() 
{ 
} 


LRESULT CALLBACK MainWindow::MainWndProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) 
{ 
switch (msg) 
{ 
case WM_DESTROY: 
    PostQuitMessage (0); 
    break; 
case WM_COMMAND: 
//HANDLE_WM_COMMAND(hwnd, wParam, lParam, OnCommand); 
    break; 
default: 
    return DefWindowProc (hwnd, msg, wParam, lParam); 
} 

return 0; 
} 


void MainWindow::OnCommand(HWND hwnd, int id, HWND hCtl, UINT codeNotify) 
{ 
switch(id) 
{ 
case IDM_FILE_EXIT: 
    PostQuitMessage(0); 
    break; 
case IDM_HELP_ABOUT: 
    AboutDialog* dlg = new AboutDialog(); 
    dlg->Run(m_hInstance, hwnd); 
    delete dlg; dlg = NULL; 
    break; 
} 
} 

bool MainWindow::Run(int nCmdShow) 
{ 
if(!RegisterClassEx(&m_wndClass)) 
    return false; 
m_hwnd = CreateWindowEx(
     0, 
     m_szClassName, 
     "Draw Lite", 
     WS_OVERLAPPEDWINDOW, 
     CW_USEDEFAULT, 
     CW_USEDEFAULT, 
     500, 
     400, 
     NULL, 
     NULL, 
     m_hInstance, 
     NULL 
     ); 
if(!m_hwnd) 
    return false; 
ShowWindow(m_hwnd, nCmdShow); 
return true; 
} 
int WINAPI 
WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmdLine, int nCmdShow) 
{ 
MSG msg; 

MainWindow *winMain = new MainWindow(hInst); 
if(!winMain->Run(nCmdShow)) 
{ 
    delete winMain; 
    return 1; // error 
} 

// Run the message loop. It will run until GetMessage() returns 0 
while (GetMessage (&msg, NULL, 0, 0)) 
{ 
    // Translate virtual-key messages into character messages 
    TranslateMessage(&msg); 
    // Send message to WindowProcedure 
    DispatchMessage(&msg); 
} 

delete winMain; 

return msg.wParam; 
} 

링커 오류가 발생하여이 필드에서 아주 새로운 부분을 수정하는 방법을 모르겠습니다. 나는 누군가가 이것에 관해 나를 도울 수 있는지 궁금하게 생각한다. 덕분에,

이

내가

[Linker error] undefined reference to _ZN11AboutDialog10DialogProcEP6HWND__jjl@16' 

무엇입니까 오류이며,이뿐만 아니라 [Linker error] undefined reference to _ZN11AboutDialog10DialogProcEP6HWND__jjl@16'

아시프

Answer 1

여기에 어떤 엄청난 오류가 없지만, 작은의 당신은 수 사람. 링커가 말했듯이, AboutDialog::DialogProc을 선언했지만 아직 정의하지 않았습니다.

AboutDialog::Run (사용자가 retval이라는 변수를 정의했지만 값을 반환하지 않음)에서 값을 반환하지 않았습니다.

정말로 들여 쓰기를 수정해야합니다.

메인 메시지 루프가 없습니다 (누락 된 main/WinMain에있을 예정입니까?).

MainWindow 클래스의 인스턴스를 만들고 Run() 코드를 만들지 않았습니다. 일반적으로 main 또는 WinMain (두 가지 중 어느 것도 정의하지 않은 것 같습니다)에서 수행합니다.