[system programming] __declspec(thread)

190703-1

 

교육을 받으면서 노트필기 했던 내용을 날것 그대로 업로드합니다.

---

WS_CHILD : 부모 내에서만 동작 

WS_OVERLAPPEDWINDOW : 겹쳐지는 윈도우

    hwndChild = CreateWindow(_T("ChildWindow"),

        _T("Child Window !!"),

        WS_OVERLAPPEDWINDOW|WS_CHILD,

        100,

        100,

        300,

        300,

        hwndParent,

        (HMENU)NULL, //저번 코드 수정 NULL로 주어야 한다.

        g_hInst,

        NULL

    );

 

__declspec(thread) static int count = 0;

 

 

#include <windows.h>

#include <TCHAR.H>

 

DWORD __stdcall DrawThread(LPVOID pParam);

DWORD __stdcall UIThread(LPVOID pParam);

 

 

 

LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg,

    WPARAM wParam, LPARAM lParam);

 

LRESULT CALLBACK ChildProc(HWND hwnd, UINT iMsg,

    WPARAM wParam, LPARAM lParam);

 

HINSTANCE g_hInst;

 

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,

    LPSTR lpszCmdLine, int nCmdShow)

{

    g_hInst = hInstance;

 

    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 = _T("Window Class Name");

    RegisterClass(&WndClass);

 

    WndClass.lpfnWndProc = ChildProc;

    WndClass.lpszClassName = _T("ChildWindow");

    RegisterClass(&WndClass);

 

    hwnd = CreateWindow(_T("Window Class Name"),

        _T("Window Title Name"),

        WS_OVERLAPPEDWINDOW,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        CW_USEDEFAULT,

        NULL,

        NULL,

        hInstance,

        NULL

    );

    ShowWindow(hwnd, nCmdShow);

    UpdateWindow(hwnd);

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

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return (int)msg.wParam;

}

 

LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg,

    WPARAM wParam, LPARAM lParam)

{

    static HANDLE hThread;

    static DWORD threadID;

    switch (iMsg)

    {

    case WM_CREATE:

        hThread = CreateThread(NULL, 0, DrawThread, hwnd, 0, &threadID);

 

        break;

    case WM_LBUTTONDOWN:

        CloseHandle(CreateThread(NULL, 0, UIThread, hwnd, 0, &threadID));

        break;

    case WM_DESTROY:

        PostQuitMessage(0);

        CloseHandle(hThread);

        break;

    }

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

}

DWORD __stdcall DrawThread(LPVOID pParam) { // Worker 쓰레드 라고한다.

    HWND hwnd = (HWND)pParam;

    HDC hdc = GetDC(hwnd);

 

    for (int i = 0; i < 100; i++)

    {

        Rectangle(hdc, 100 + i, 100, 200 + i, 200);

        Sleep(20);

    }

 

    ReleaseDC(hwnd, hdc);

 

    return 0;

}

LRESULT CALLBACK ChildProc(HWND hwnd, UINT iMsg,

    WPARAM wParam, LPARAM lParam)

{

    __declspec(thread) static int count = 0;

    TCHAR buf[100];

    HDC hdc;

    switch (iMsg)

    {

    case WM_CREATE:

        SetTimer(hwnd, 10, 500, NULL);

        break;

    case WM_TIMER:

        wsprintf(buf, "count:%d", ++count);

        SetWindowText(hwnd, buf);

        break;

    case WM_LBUTTONDOWN:

        hdc = GetDC(hwnd);

        Rectangle(hdc, LOWORD(lParam), HIWORD(lParam), LOWORD(lParam) + 50, HIWORD(lParam) + 50);

        ReleaseDC(hwnd, hdc);

        break;

    case WM_DESTROY:

        PostQuitMessage(0);

        break;

    }

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

}

DWORD __stdcall UIThread(LPVOID pParam) { // UI 쓰레드 라고 한다.

 

    HWND hwndParent=(HWND)pParam;

    HWND hwndChild;

    MSG      msg;

 

 

    hwndChild = CreateWindow(_T("ChildWindow"),

        _T("Child Window !!"),

        WS_OVERLAPPEDWINDOW| WS_POPUPWINDOW |WS_CHILD,

        100,

        100,

        300,

        300,

        hwndParent,

        (HMENU)NULL,

        g_hInst,

        NULL

    );

    ShowWindow(hwndChild, SW_SHOW);

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

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return (int)msg.wParam;

 

    return 0;

}