멤버함수포인터 테이블 이용 Window – C# (Csharp) 프로그래밍


#include <Windows.h>

LRESULT CALLBACK WndProc(HWND hwnd,UINT iMsg,WPARAM wParam,LPARAM lParam);

//Class CObject
class CObject{
protected:
    static char szAppName[];
	HWND hwnd;
	MSG msg;
	WNDCLASSEX wndclass;
public:
	void InitInstance(HINSTANCE hInstance, PSTR szCmdLine, int iCmdShow);
	void Run();//Message
    WPARAM ExitInstance(); //exit
	//message handler
	virtual void OnCreate() = 0;
	virtual void OnDraw() = 0;
	virtual void OnDestroy() = 0;
};

void CObject::InitInstance(HINSTANCE hInstance, PSTR szCmdLine, int iCmdShow)
{
	wndclass.cbSize = sizeof(wndclass);
	wndclass.style  = CS_HREDRAW|CS_VREDRAW;
	wndclass.lpfnWndProc = WndProc;
	wndclass.cbClsExtra =0;
	wndclass.cbWndExtra= 0;
	wndclass.hInstance = hInstance;
	wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);
	wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndclass.lpszMenuName = NULL;
	wndclass.lpszClassName = szAppName;
	wndclass.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

	RegisterClassEx(&wndclass);

	hwnd = CreateWindow(szAppName,
						"Hello Program",
						WS_OVERLAPPEDWINDOW,
						CW_USEDEFAULT,
						0,
						CW_USEDEFAULT,
						0,
						NULL,
						NULL,
						hInstance,
						NULL);
	ShowWindow(hwnd,iCmdShow);
	UpdateWindow(hwnd);
}

void CObject::Run(){
	while(GetMessage(&msg,NULL,0,0)){
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
}

WPARAM CObject::ExitInstance(){
	return msg.wParam;
}

char CObject::szAppName[]="HelloWin";
CObject* pCObject;

//class CView
class CView;
typedef void (CView::*CViewFunPointer)();//함수포인터
typedef struct tagMessgeMap{ //구조체
	UINT iMsg;
	CViewFunPointer fp;  //함수포인터 주소
}MessageMap;
static CViewFunPointer fpCViewGlobal; //정적 주소

class CView:public CObject{
public:
	static MessageMap messageMap[];
	//override all message handler
	void OnCreate();
	void OnDraw();
	void OnDestroy();
};

//{{BEGIN_MESSAGE_MAP
MessageMap CView::messageMap[]={
	{WM_CREATE,&CView::OnCreate},
	{WM_PAINT,&CView::OnDraw},
	{WM_DESTROY,&CView::OnDestroy},
	{0,NULL}
};
//}}END_MESSAGE_MAP

void CView::OnCreate(){
}

void CView::OnDraw()
{
	HDC hdc;
	PAINTSTRUCT ps;
	RECT rect;

	hdc=BeginPaint(hwnd,&ps);
	GetClientRect(hwnd,&rect);
	DrawText(hdc,"Hello Window",-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
	EndPaint(hwnd,&ps);
}

void CView::OnDestroy() {
	PostQuitMessage(0);
}

CView app;

LRESULT CALLBACK WndProc(HWND hwnd,UINT iMsg,WPARAM wParam,LPARAM lParam)
{
	int i=0;

	while(CView::messageMap[i].iMsg!=0){
		if(iMsg==CView::messageMap[i].iMsg){
			fpCViewGlobal=CView::messageMap[i].fp;
			(app.*fpCViewGlobal)();
			return 0;
		}
		++i;
	}
	return DefWindowProc(hwnd,iMsg,wParam,lParam);
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,int iCmdShow)
{
	pCObject = &app; // CView app;
	pCObject->InitInstance(hInstance,szCmdLine,iCmdShow);
	pCObject->Run();
	return pCObject->ExitInstance();
}

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#include <Windows.h>

LRESULT CALLBACK WndProc(HWND hwnd,UINT iMsg,WPARAM wParam,LPARAM lParam);

//Class CObject

class CObject{

protected:

static char szAppName[];

HWND hwnd;

MSG msg;

WNDCLASSEX wndclass;

public:

void InitInstance(HINSTANCE hInstance, PSTR szCmdLine, int iCmdShow);

void Run();//Message

WPARAM ExitInstance(); //exit

//message handler

virtual void OnCreate() = 0;

virtual void OnDraw() = 0;

virtual void OnDestroy() = 0;

};

void CObject::InitInstance(HINSTANCE hInstance, PSTR szCmdLine, int iCmdShow)

{

wndclass.cbSize = sizeof(wndclass);

wndclass.style = CS_HREDRAW|CS_VREDRAW;

wndclass.lpfnWndProc = WndProc;

wndclass.cbClsExtra =0;

wndclass.cbWndExtra= 0;

wndclass.hInstance = hInstance;

wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);

wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);

wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

wndclass.lpszMenuName = NULL;

wndclass.lpszClassName = szAppName;

wndclass.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

RegisterClassEx(&wndclass);

hwnd = CreateWindow(szAppName,

"Hello Program",

WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT,

NULL,

hInstance,

NULL);

ShowWindow(hwnd,iCmdShow);

UpdateWindow(hwnd);

}

void CObject::Run(){

while(GetMessage(&msg,NULL,0,0)){

TranslateMessage(&msg);

DispatchMessage(&msg);

}

WPARAM CObject::ExitInstance(){

return msg.wParam;

}

char CObject::szAppName[]="HelloWin";

CObject* pCObject;

//class CView

class CView;

typedef void (CView::*CViewFunPointer)();//함수포인터

typedef struct tagMessgeMap{ //구조체

UINT iMsg;

CViewFunPointer fp; //함수포인터 주소

}MessageMap;

static CViewFunPointer fpCViewGlobal; //정적 주소

class CView:public CObject{

public:

static MessageMap messageMap[];

//override all message handler

void OnCreate();

void OnDraw();

void OnDestroy();

};

//{{BEGIN_MESSAGE_MAP

MessageMap CView::messageMap[]={

{WM_CREATE,&CView::OnCreate},

{WM_PAINT,&CView::OnDraw},

{WM_DESTROY,&CView::OnDestroy},

{0,NULL}

};

//}}END_MESSAGE_MAP

void CView::OnCreate(){

}

void CView::OnDraw()

{

HDC hdc;

PAINTSTRUCT ps;

RECT rect;

hdc=BeginPaint(hwnd,&ps);

GetClientRect(hwnd,&rect);

DrawText(hdc,"Hello Window",-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);

EndPaint(hwnd,&ps);

}

void CView::OnDestroy() {

PostQuitMessage(0);

}

CView app;

LRESULT CALLBACK WndProc(HWND hwnd,UINT iMsg,WPARAM wParam,LPARAM lParam)

{

int i=0;

while(CView::messageMap[i].iMsg!=0){

if(iMsg==CView::messageMap[i].iMsg){

fpCViewGlobal=CView::messageMap[i].fp;

(app.*fpCViewGlobal)();

return 0;

}

++i;

}

return DefWindowProc(hwnd,iMsg,wParam,lParam);

}

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,int iCmdShow)

{

pCObject = &app; // CView app;

pCObject->InitInstance(hInstance,szCmdLine,iCmdShow);

pCObject->Run();

return pCObject->ExitInstance();

}