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데블스캠프2006/목요일/winapi


1. PT 자료

Upload: api.ppt

2. sample1. hello_msg

~cpp
#include <Windows.h>

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
					PSTR szCmdLine, int iCmdShow)
{
	MessageBox (NULL, "Hello World!", "HelloMsg", 0);

	return 0;
}

3. sample2. hello_win

~cpp
#include <Windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
					PSTR szCmdLine, int iCmdShow)
{
	static char szAppName[] = "HelloWin" ;
	HWND         hwnd ;
	MSG          msg ;
	WNDCLASS     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 ;

	if (!RegisterClass (&wndclass))
	{
		return 0 ;
	}

	hwnd = CreateWindow (szAppName, // window class name
		"The Hello Program",		// window caption
		WS_OVERLAPPEDWINDOW,        // window style
		CW_USEDEFAULT,              // initial x position
		CW_USEDEFAULT,              // initial y position
		CW_USEDEFAULT,              // initial x size
		CW_USEDEFAULT,              // initial y size
		NULL,                       // parent window handle
		NULL,                       // window menu handle
		hInstance,                  // program instance handle
		NULL) ;                     // creation parameters

	ShowWindow (hwnd, iCmdShow) ;
	UpdateWindow (hwnd) ;

	while (GetMessage (&msg, NULL, 0, 0))
	{
		TranslateMessage (&msg) ;
		DispatchMessage (&msg) ;
	}

	return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC         hdc ;
	PAINTSTRUCT ps ;
	RECT        rect ;

	switch (message)
	{
	case WM_PAINT:
		hdc = BeginPaint (hwnd, &ps) ;

		GetClientRect (hwnd, &rect) ;

		DrawText (hdc, "Hello World!", -1, &rect,
					DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
		EndPaint (hwnd, &ps) ;
		return 0 ;

	case WM_DESTROY:
		PostQuitMessage (0) ;
		return 0 ;
	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;
}

4. sample3. btn_cmd

~cpp
#include <Windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
					PSTR szCmdLine, int iCmdShow)
{
	static char szAppName[] = "HelloWin" ;
	HWND         hwnd ;
	MSG          msg ;
	WNDCLASS     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 ;

	if (!RegisterClass (&wndclass))
	{
		return 0 ;
	}

	hwnd = CreateWindow (szAppName, // window class name
		"The Hello Program",		// window caption
		WS_OVERLAPPEDWINDOW,        // window style
		CW_USEDEFAULT,              // initial x position
		CW_USEDEFAULT,              // initial y position
		CW_USEDEFAULT,              // initial x size
		CW_USEDEFAULT,              // initial y size
		NULL,                       // parent window handle
		NULL,                       // window menu handle
		hInstance,                  // program instance handle
		NULL) ;                     // creation parameters

	ShowWindow (hwnd, iCmdShow) ;
	UpdateWindow (hwnd) ;

	while (GetMessage (&msg, NULL, 0, 0))
	{
		TranslateMessage (&msg) ;
		DispatchMessage (&msg) ;
	}

	return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC         hdc ;
	PAINTSTRUCT ps ;
	RECT        rect ;

	static HWND hButton;
	static const int BUTTON_ID = 1000;

	switch (message)
	{
	case WM_CREATE:
		hButton = CreateWindow("BUTTON", "Click Me!", WS_CHILD | WS_VISIBLE, 
			100, 100, 100, 30, 
			hwnd, (HMENU)BUTTON_ID, 0, 0);
		return 0;

	case WM_COMMAND:
		if(LOWORD(wParam) == BUTTON_ID)
		{
			MessageBox(hwnd, "Again Hello!", "Again", 0);
		}
		return 0;

	case WM_PAINT:
		hdc = BeginPaint (hwnd, &ps) ;

		GetClientRect (hwnd, &rect) ;

		DrawText (hdc, "Hello World!", -1, &rect,
			DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
		EndPaint (hwnd, &ps) ;
		return 0 ;

	case WM_DESTROY:
		PostQuitMessage (0) ;
		return 0 ;
	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;
}

5. sample4. timer

Upload:timer.exe


~cpp
#include <Windows.h>
#include <cstdio>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
					PSTR szCmdLine, int iCmdShow)
{
	static char szAppName[] = "HelloWin" ;
	HWND         hwnd ;
	MSG          msg ;
	WNDCLASS     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 ;

	if (!RegisterClass (&wndclass))
	{
		return 0 ;
	}

	hwnd = CreateWindow (szAppName, "Timer Sample", WS_OVERLAPPEDWINDOW, 
						CW_USEDEFAULT, CW_USEDEFAULT, 800, 600, NULL, NULL, hInstance, NULL) ;

	ShowWindow (hwnd, iCmdShow) ;
	UpdateWindow (hwnd) ;

	while (GetMessage (&msg, NULL, 0, 0))
	{
		TranslateMessage (&msg) ;
		DispatchMessage (&msg) ;
	}

	return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	static float fCount;

	switch (message)
	{
	case WM_CREATE:
		SetTimer(hwnd, 0, 100, 0);
		return 0;

	case WM_TIMER:
		{
			HDC hdc = GetDC(hwnd);

			RECT rcClient;
			GetClientRect(hwnd, &rcClient);

			char szBuffer[128];
			sprintf(szBuffer, "Count: %.1f", fCount);
			DrawText (hdc, szBuffer, -1, &rcClient, DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;

			fCount += 0.1f;

			ReleaseDC(hwnd, hdc);
		}
		return 0;

	case WM_DESTROY:
		KillTimer(hwnd, 0);
		PostQuitMessage (0) ;
		return 0 ;
	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;
}

6. practice1. click_me

7. sample5. getdc

Upload:getdc.exe


~cpp
#include <Windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
					PSTR szCmdLine, int iCmdShow)
{
	static char szAppName[] = "HelloWin" ;
	HWND         hwnd ;
	MSG          msg ;
	WNDCLASS     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 ;

	if (!RegisterClass (&wndclass))
	{
		return 0 ;
	}

	hwnd = CreateWindow (szAppName, "GetDC Sample", WS_OVERLAPPEDWINDOW, 
						CW_USEDEFAULT, CW_USEDEFAULT, 800, 600, NULL, NULL, hInstance, NULL) ;

	ShowWindow (hwnd, iCmdShow) ;
	UpdateWindow (hwnd) ;

	while (GetMessage (&msg, NULL, 0, 0))
	{
		TranslateMessage (&msg) ;
		DispatchMessage (&msg) ;
	}

	return msg.wParam ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
	case WM_LBUTTONDOWN:
		{
			HDC hdc = GetDC(hwnd);

			HBRUSH hBrush = CreateSolidBrush(RGB(rand() % 256, rand() % 256, rand() % 256));
			HBRUSH hOldBrush = (HBRUSH)SelectObject(hdc, hBrush);

			Rectangle(hdc, rand() % 800, rand() % 600, rand() % 800, rand() % 600);

			SelectObject(hdc, hOldBrush);
			ReleaseDC(hwnd, hdc);
		}
		return 0;

	case WM_DESTROY:
		PostQuitMessage (0) ;
		return 0 ;
	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;
}

8. practice2. dead_pixel

9. 감상문

오~ 경력 7년차 프로그래머 출동중비중??? ㅋㅋㅋ - eternalbleu
위키 에러나서 소스가 안올라가네요;;; - ljh131
남군에게 무러봐라.. 너한테만 나는 에러라고 확인해 줄꺼야. ㅋㅋ ㅡoㅡ - eternalbleu
대답을 예상하는 센스 ㅋㅋ -창섭
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블스캠프2006/목요일
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