[system programming] CHECKER3.C -- Mouse Hit-Test Demo Program No. 3

190704-2 CHECKER3.C -- Mouse Hit-Test Demo Program No. 3

 

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---

 

A

/*-------------------------------------------------

CHECKER3.C -- Mouse Hit-Test Demo Program No. 3

                 (c) Charles Petzold, 1998

-------------------------------------------------*/

 

#include <windows.h>

#pragma warning ( disable:4312)

#define DIVISIONS 3

#define WM_DRAWXMSG WM_APP+100

typedef struct _Data {

    POINT pt;

    int click;

} Data, *PData;

enum {CLICK, REQINIT, REPINIT};

 

#pragma region region

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

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

 

TCHAR szChildClass[] = TEXT("Checker3_Child");

 

 

 

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,

    PSTR szCmdLine, int iCmdShow)

{

    static TCHAR szAppName[] = TEXT("Checker3");

    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))

    {

        MessageBox(NULL, TEXT("Program requires Windows NT!"),

            szAppName, MB_ICONERROR);

        return 0;

    }

 

    wndclass.lpfnWndProc = ChildWndProc;

    wndclass.cbWndExtra = sizeof(long);

    wndclass.hIcon = NULL;

    wndclass.lpszClassName = szChildClass;

 

    RegisterClass(&wndclass);

 

    hwnd = CreateWindow(szAppName, TEXT("CopyDataA"),

        WS_OVERLAPPEDWINDOW,

        CW_USEDEFAULT, CW_USEDEFAULT,

        CW_USEDEFAULT, CW_USEDEFAULT,

        NULL, NULL, hInstance, NULL);

 

    ShowWindow(hwnd, iCmdShow);

    UpdateWindow(hwnd);

 

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

    {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return (int)msg.wParam;

}

#pragma endregion

 

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

{

    static HWND hwndChild[DIVISIONS][DIVISIONS];

    int cxBlock, cyBlock, x, y;

 

    switch (message)

    {

    case WM_CREATE:

        for (x = 0; x < DIVISIONS; x++)

            for (y = 0; y < DIVISIONS; y++)

                hwndChild[x][y] = CreateWindow(szChildClass, NULL,

                    WS_CHILDWINDOW | WS_VISIBLE,

                    0, 0, 0, 0,

                    hwnd, (HMENU)(y << 8 | x),

                    (HINSTANCE)GetWindowLong(hwnd, GWLP_HINSTANCE),

                    NULL);

        {

            HWND hRemoteHwnd = FindWindow(NULL, "CopyDataB");

            if (hRemoteHwnd != NULL) { // B가 열려있으면

                COPYDATASTRUCT cds{ REQINIT,0,NULL };

                SendMessage(hRemoteHwnd, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);

            }

        }

        return 0;

 

    case WM_SIZE:

        cxBlock = LOWORD(lParam) / DIVISIONS;

        cyBlock = HIWORD(lParam) / DIVISIONS;

 

        for (x = 0; x < DIVISIONS; x++)

            for (y = 0; y < DIVISIONS; y++)

                MoveWindow(hwndChild[x][y],

                    x * cxBlock, y * cyBlock,

                    cxBlock, cyBlock, TRUE);

        return 0;

 

    case WM_LBUTTONDOWN:

        MessageBeep(0);

        return 0;

    case WM_COPYDATA:

    {

        PCOPYDATASTRUCT pcds = (PCOPYDATASTRUCT)lParam; // 끝나기 전 까지만 유효함

        switch (pcds->dwData) {

        case CLICK:

        {

            Data data = *(Data*)pcds->lpData;

            HWND hChild = GetDlgItem(hwnd, MAKEWORD(data.pt.x, data.pt.y));

            SetWindowLong(hChild, 0, data.click);

            InvalidateRect(hwnd, NULL, TRUE);

        }

        break;

        case REQINIT:

        {

            Data pdata[DIVISIONS][DIVISIONS];

            for (int x = 0; x < DIVISIONS; ++x) {

                for (int y = 0; y < DIVISIONS; ++y)

                {

                    pdata[x][y].pt.x = LOBYTE(GetWindowLong(hwndChild[x][y], GWLP_ID));

                    pdata[x][y].pt.y = HIBYTE(GetWindowLong(hwndChild[x][y], GWLP_ID));

                    pdata[x][y].click = GetWindowLong(hwndChild[x][y], 0);

                }

            }

            COPYDATASTRUCT cds = { REPINIT,sizeof(Data) * DIVISIONS * DIVISIONS,(LPVOID)pdata };

            SendMessage((HWND)wParam, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);

        }

        break;

        case REPINIT:

        {

            PData pdata = (PData)pcds->lpData;

            //9개의 _Data가 날라온다.

            for (int i = 0; i < DIVISIONS * DIVISIONS; i++)

            {

                DWORD winId = MAKEWORD(pdata[i].pt.x, pdata[i].pt.y);

                HWND hChild = GetDlgItem(hwnd, winId);

                SetWindowLong(hChild, 0, pdata[i].click); // 엑스트라정보(클릭정보)를 설정한다.

                InvalidateRect(hwnd, NULL, TRUE); // 다시그린다.

            }

        }

        break;

    

        }

    }

    return 0;

    case WM_DESTROY:

        PostQuitMessage(0);

        return 0;

    }

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

}

 

LRESULT CALLBACK ChildWndProc(HWND hwnd, UINT message,

    WPARAM wParam, LPARAM lParam)

{

    HDC hdc;

    PAINTSTRUCT ps;

    RECT rect;

 

    switch (message)

    {

    case WM_CREATE:

        SetWindowLong(hwnd, 0, 0); // on/off flag

        return 0;

 

    case WM_DRAWXMSG:

    {

        HWND hRemoteHwnd = FindWindow(NULL, ("CopyDataB"));

        if (hRemoteHwnd != NULL) {

            COPYDATASTRUCT cds = { 100,7, (PVOID)"Hello!" };

            SendMessage(hRemoteHwnd, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);

        }

    }

    break;

    case WM_LBUTTONDOWN:

        SetWindowLong(hwnd, 0, 1 ^ GetWindowLong(hwnd, 0));

        {

            int x = LOBYTE(LOWORD(GetWindowLong(hwnd, GWLP_ID))); // 내 윈도우의 아이디 값을 얻어온다.

            int y = HIBYTE(LOWORD(GetWindowLong(hwnd, GWLP_ID)));

 

            HWND hRemoteHwnd = FindWindow(NULL, ("CopyDataB"));

            if (hRemoteHwnd != NULL) {

                Data data = { {x,y},GetWindowLong(hwnd,0) };

                COPYDATASTRUCT cds = { CLICK,sizeof(data), (LPVOID)&data };

                SendMessage(hRemoteHwnd, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);

            }

 

        }

        InvalidateRect(hwnd, NULL, FALSE);

        return 0;

 

    case WM_PAINT:

        hdc = BeginPaint(hwnd, &ps);

 

        GetClientRect(hwnd, &rect);

        Rectangle(hdc, 0, 0, rect.right, rect.bottom);

 

        if (GetWindowLong(hwnd, 0))

        {

            MoveToEx(hdc, 0, 0, NULL);

            LineTo(hdc, rect.right, rect.bottom);

            MoveToEx(hdc, 0, rect.bottom, NULL);

            LineTo(hdc, rect.right, 0);

        }

 

        EndPaint(hwnd, &ps);

        return 0;

    }

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

}

---

B

/*-------------------------------------------------
CHECKER3.C -- Mouse Hit-Test Demo Program No. 3
                 (c) Charles Petzold, 1998
-------------------------------------------------*/

#include <windows.h>
#pragma warning ( disable:4312)
#define DIVISIONS 3
#define WM_DRAWXMSG WM_APP+100
typedef struct _Data {
    POINT pt;
    int click;
} Data, * PData;
enum { CLICK , REQINIT, REPINIT};

#pragma region region


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

TCHAR szChildClass[] = TEXT("Checker3_Child");

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
    PSTR szCmdLine, int iCmdShow)
{
    static TCHAR szAppName[] = TEXT("Checker3");
    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))
    {
        MessageBox(NULL, TEXT("Program requires Windows NT!"),
            szAppName, MB_ICONERROR);
        return 0;
    }

    wndclass.lpfnWndProc = ChildWndProc;
    wndclass.cbWndExtra = sizeof(long);
    wndclass.hIcon = NULL;
    wndclass.lpszClassName = szChildClass;

    RegisterClass(&wndclass);

    hwnd = CreateWindow(szAppName, TEXT("CopyDataB"),
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        NULL, NULL, hInstance, NULL);

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

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int)msg.wParam;
}
#pragma endregion

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND hwndChild[DIVISIONS][DIVISIONS];
    int cxBlock, cyBlock, x, y;

    switch (message)
    {
    case WM_CREATE:
        for (x = 0; x < DIVISIONS; x++)
            for (y = 0; y < DIVISIONS; y++)
                hwndChild[x][y] = CreateWindow(szChildClass, NULL,
                    WS_CHILDWINDOW | WS_VISIBLE,
                    0, 0, 0, 0,
                    hwnd, (HMENU)(y << 8 | x),
                    (HINSTANCE)GetWindowLong(hwnd, GWLP_HINSTANCE),
                    NULL);

        {
            HWND hRemoteHwnd = FindWindow(NULL, "CopyDataA");
            if (hRemoteHwnd != NULL) { // A가 열려있으면
                COPYDATASTRUCT cds{ REQINIT,0,NULL };
                SendMessage(hRemoteHwnd, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);
            }
        }
        return 0;

    case WM_SIZE:
        cxBlock = LOWORD(lParam) / DIVISIONS;
        cyBlock = HIWORD(lParam) / DIVISIONS;

        for (x = 0; x < DIVISIONS; x++)
            for (y = 0; y < DIVISIONS; y++)
                MoveWindow(hwndChild[x][y],
                    x * cxBlock, y * cyBlock,
                    cxBlock, cyBlock, TRUE);
        return 0;

    case WM_LBUTTONDOWN:
        MessageBeep(0);
        return 0;
    case WM_COPYDATA:
    {
        PCOPYDATASTRUCT pcds = (PCOPYDATASTRUCT)lParam; // 끝나기 전 까지만 유효함
        switch (pcds->dwData) {
        case CLICK:
        {
            Data data = *(Data*)pcds->lpData;
            HWND hChild = GetDlgItem(hwnd, MAKEWORD(data.pt.x, data.pt.y));
            SetWindowLong(hChild, 0, data.click);
            InvalidateRect(hwnd, NULL, TRUE);
        }
        break;
        case REQINIT:
        {
            Data pdata[DIVISIONS][DIVISIONS];
            for (int x = 0; x < DIVISIONS; ++x) {
                for (int y = 0; y < DIVISIONS; ++y)
                {
                    pdata[x][y].pt.x = LOBYTE(GetWindowLong(hwndChild[x][y], GWLP_ID));
                    pdata[x][y].pt.y = HIBYTE(GetWindowLong(hwndChild[x][y], GWLP_ID));
                    pdata[x][y].click = GetWindowLong(hwndChild[x][y], 0);
                }
            }
            COPYDATASTRUCT cds = { REPINIT,sizeof(Data) * DIVISIONS * DIVISIONS,(LPVOID)pdata };
            SendMessage((HWND)wParam, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);
        }
        break;
        case REPINIT:
        {
            PData pdata = (PData)pcds->lpData;
            //9개의 _Data가 날라온다.
            for (int i = 0; i < DIVISIONS*DIVISIONS; i++)
            {
                DWORD winId = MAKEWORD(pdata[i].pt.x, pdata[i].pt.y);
                HWND hChild = GetDlgItem(hwnd, winId);
                SetWindowLong(hChild, 0, pdata[i].click); // 엑스트라정보(클릭정보)를 설정한다.
                InvalidateRect(hwnd, NULL, TRUE); // 다시그린다.
            }
        }

        break;
        }
    }
    return 0;

    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

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

    switch (message)
    {
    case WM_CREATE:
        SetWindowLong(hwnd, 0, 0); // on/off flag
        return 0;

    case WM_DRAWXMSG:
    {
        HWND hRemoteHwnd = FindWindow(NULL, ("CopyDataB"));
        if (hRemoteHwnd != NULL) {
            COPYDATASTRUCT cds = { 100,7, (PVOID)"Hello!" };
            SendMessage(hRemoteHwnd, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);
        }
    }
    break;

    case WM_LBUTTONDOWN:
        SetWindowLong(hwnd, 0, 1 ^ GetWindowLong(hwnd, 0));
        {
            int x = LOBYTE(LOWORD(GetWindowLong(hwnd, GWLP_ID))); // 내 윈도우의 아이디 값을 얻어온다.
            int y = HIBYTE(LOWORD(GetWindowLong(hwnd, GWLP_ID)));

            HWND hRemoteHwnd = FindWindow(NULL, ("CopyDataA"));
            if (hRemoteHwnd != NULL) {
                Data data = { {x,y},GetWindowLong(hwnd,0) };
                COPYDATASTRUCT cds = { CLICK,sizeof(data), (LPVOID)& data };
                SendMessage(hRemoteHwnd, WM_COPYDATA, (WPARAM)hwnd, (LPARAM)& cds);
            }

        }
        InvalidateRect(hwnd, NULL, FALSE);
        return 0;

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

        GetClientRect(hwnd, &rect);
        Rectangle(hdc, 0, 0, rect.right, rect.bottom);

        if (GetWindowLong(hwnd, 0))
        {
            MoveToEx(hdc, 0, 0, NULL);
            LineTo(hdc, rect.right, rect.bottom);
            MoveToEx(hdc, 0, rect.bottom, NULL);
            LineTo(hdc, rect.right, 0);
        }

        EndPaint(hwnd, &ps);
        return 0;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}