윈도우즈 API 정복 4장 예제 소스코드

API와 운영체제를 통해 알고리즘과 논리력을 키울 수 있도록 쓰여진 책입니다. 초급 프로그래머는 그래픽 환경에 쉽게 적응하여 탄탄한 기본기를 다질 수 있으며 중급 프로그래머는 운영체제의 내부 구조와 동작을 이해함으로써 진정한 응용력을 키울 수 있다.

#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HINSTANCE g_hInst;
LPCTSTR lpszClass=TEXT("Callback");

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
		  ,LPSTR lpszCmdParam,int nCmdShow)
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst=hInstance;
	
	WndClass.cbClsExtra=0;
	WndClass.cbWndExtra=0;
	WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	WndClass.hInstance=hInstance;
	WndClass.lpfnWndProc=WndProc;
	WndClass.lpszClassName=lpszClass;
	WndClass.lpszMenuName=NULL;
	WndClass.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&WndClass);

	hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW,
		  CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
		  NULL,(HMENU)NULL,hInstance,NULL);
	ShowWindow(hWnd,nCmdShow);
	
	while (GetMessage(&Message,NULL,0,0)) {
		TranslateMessage(&Message);
		DispatchMessage(&Message);
	}
	return (int)Message.wParam;
}

void CALLBACK TimerProc(HWND hWnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
	HDC hdc;
	int i;
	hdc=GetDC(hWnd);
	for (i=0;i<1000;i++) {
		SetPixel(hdc,rand()%500, rand()%400,
			RGB(rand()%256,rand()%256,rand()%256));
	}
	ReleaseDC(hWnd, hdc);
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;

	switch (iMessage) {
	case WM_CREATE:
		SetTimer(hWnd,1,100,TimerProc);
		return 0;
	case WM_LBUTTONDOWN:
		hdc=GetDC(hWnd);
		Ellipse(hdc,LOWORD(lParam)-10,HIWORD(lParam)-10,
			LOWORD(lParam)+10,HIWORD(lParam)+10);
		ReleaseDC(hWnd, hdc);
		return 0;
	case WM_DESTROY:
		KillTimer(hWnd, 1);
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}

 

#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HINSTANCE g_hInst;
LPCTSTR lpszClass=TEXT("Client");

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
		  ,LPSTR lpszCmdParam,int nCmdShow)
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst=hInstance;
	
	WndClass.cbClsExtra=0;
	WndClass.cbWndExtra=0;
	WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	WndClass.hInstance=hInstance;
	WndClass.lpfnWndProc=WndProc;
	WndClass.lpszClassName=lpszClass;
	WndClass.lpszMenuName=NULL;
	WndClass.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&WndClass);

	hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW,
		  CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
		  NULL,(HMENU)NULL,hInstance,NULL);
	ShowWindow(hWnd,nCmdShow);
	
	while (GetMessage(&Message,NULL,0,0)) {
		TranslateMessage(&Message);
		DispatchMessage(&Message);
	}
	return (int)Message.wParam;
}

//* WM_CREATE에서 작업영역 크기 조사
LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	static RECT rt;

	switch (iMessage) {
	case WM_CREATE:
		GetClientRect(hWnd,&rt);
		return 0;
	case WM_PAINT:
		hdc=BeginPaint(hWnd, &ps);
		SetTextAlign(hdc,TA_CENTER);
		TextOut(hdc,rt.right/2, rt.bottom/2, TEXT("Center String"),13);
		EndPaint(hWnd, &ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}
//*/

/* WM_SIZE에서 작업영역 크기 조사
LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	static RECT rt;

	switch (iMessage) {
	case WM_SIZE:
		GetClientRect(hWnd, &rt);
		//rt.right=LOWORD(lParam);
		//rt.bottom=HIWORD(lParam);
		InvalidateRect(hWnd, NULL, TRUE);
		return 0;
	case WM_PAINT:
		hdc=BeginPaint(hWnd, &ps);
		SetTextAlign(hdc,TA_CENTER);
		TextOut(hdc,rt.right/2, rt.bottom/2, TEXT("Center String"),13);
		EndPaint(hWnd, &ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}
//*/

/* WM_PAINT에서 작업영역 크기 조사
LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	RECT rt;

	switch (iMessage) {
	case WM_PAINT:
		hdc=BeginPaint(hWnd, &ps);
		GetClientRect(hWnd, &rt);
		SetTextAlign(hdc,TA_CENTER);
		TextOut(hdc,rt.right/2, rt.bottom/2, TEXT("Center String"),13);
		EndPaint(hWnd, &ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}
//*/

 

#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HINSTANCE g_hInst;
LPCTSTR lpszClass=TEXT("Key");

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
	  ,LPSTR lpszCmdParam,int nCmdShow)
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst=hInstance;

	WndClass.cbClsExtra=0;
	WndClass.cbWndExtra=0;
	WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	WndClass.hInstance=hInstance;
	WndClass.lpfnWndProc=WndProc;
	WndClass.lpszClassName=lpszClass;
	WndClass.lpszMenuName=NULL;
	WndClass.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&WndClass);

	hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
		NULL,(HMENU)NULL,hInstance,NULL);
	ShowWindow(hWnd,nCmdShow);

	while (GetMessage(&Message,NULL,0,0)) {
		TranslateMessage(&Message);
		DispatchMessage(&Message);
	}
	return (int)Message.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	static TCHAR str[256];
	int len;

	switch (iMessage) {
	case WM_CHAR:
//*
		len=lstrlen(str);
		str[len]=(TCHAR)wParam;
		str[len+1]=0;
		InvalidateRect(hWnd,NULL,FALSE);
//*/
/*
		if ((TCHAR)wParam == ' ') {
			str[0]=0;
		} else {
			len=lstrlen(str);
			str[len]=(TCHAR)wParam;
			str[len+1]=0;
		}
		InvalidateRect(hWnd,NULL,TRUE);
//*/
		return 0;
	case WM_PAINT:
		hdc=BeginPaint(hWnd,&ps);
		TextOut(hdc,100,100,str,lstrlen(str));
		EndPaint(hWnd,&ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}

 

#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HINSTANCE g_hInst;
LPCTSTR lpszClass=TEXT("KeyDown");

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
		  ,LPSTR lpszCmdParam,int nCmdShow)
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst=hInstance;
	
	WndClass.cbClsExtra=0;
	WndClass.cbWndExtra=0;
	WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	WndClass.hInstance=hInstance;
	WndClass.lpfnWndProc=WndProc;
	WndClass.lpszClassName=lpszClass;
	WndClass.lpszMenuName=NULL;
	WndClass.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&WndClass);

	hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW,
		  CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
		  NULL,(HMENU)NULL,hInstance,NULL);
	ShowWindow(hWnd,nCmdShow);
	
	while (GetMessage(&Message,NULL,0,0)) {
		TranslateMessage(&Message);
		DispatchMessage(&Message);
	}
	return (int)Message.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	static int x=100;
	static int y=100;

	switch (iMessage) {
	case WM_KEYDOWN:
		switch (wParam) {
		case VK_LEFT:
			x-=8;
			break;
		case VK_RIGHT:
			x+=8;
			break;
		case VK_UP:
			y-=8;
			break;
		case VK_DOWN:
			y+=8;
			break;
		}
		//InvalidateRect(hWnd,NULL,TRUE);
		InvalidateRect(hWnd,NULL,FALSE);
		return 0;
	case WM_PAINT:
		hdc=BeginPaint(hWnd,&ps);
		TextOut(hdc,x,y,TEXT("A"),1);
		EndPaint(hWnd,&ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}

 

#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HINSTANCE g_hInst;
LPCTSTR lpszClass=TEXT("Mouse");

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
		  ,LPSTR lpszCmdParam,int nCmdShow)
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst=hInstance;
	
	WndClass.cbClsExtra=0;
	WndClass.cbWndExtra=0;
	WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	WndClass.hInstance=hInstance;
	WndClass.lpfnWndProc=WndProc;
	WndClass.lpszClassName=lpszClass;
	WndClass.lpszMenuName=NULL;
	WndClass.style=CS_HREDRAW | CS_VREDRAW;// | CS_DBLCLKS;
	RegisterClass(&WndClass);

	hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW,
		  CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
		  NULL,(HMENU)NULL,hInstance,NULL);
	ShowWindow(hWnd,nCmdShow);
	
	while (GetMessage(&Message,NULL,0,0)) {
		TranslateMessage(&Message);
		DispatchMessage(&Message);
	}
	return (int)Message.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	static int x;
	static int y;
	static BOOL bNowDraw=FALSE;

	switch (iMessage) {
	case WM_LBUTTONDOWN:
		x=LOWORD(lParam);
		y=HIWORD(lParam);
		bNowDraw=TRUE;
		return 0;
	case WM_MOUSEMOVE:
		if (bNowDraw==TRUE) {
			hdc=GetDC(hWnd);
			MoveToEx(hdc,x,y,NULL);
			x=LOWORD(lParam);
			y=HIWORD(lParam);
			LineTo(hdc,x,y);
			ReleaseDC(hWnd,hdc);
		}
		return 0;
	case WM_LBUTTONUP:
		bNowDraw=FALSE;
		return 0;
	case WM_LBUTTONDBLCLK:
		InvalidateRect(hWnd, NULL, TRUE);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	}
	return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}