第6章 键盘——StokFont

#define _CRT_SECURE_NO_WARNINGS
#define _CRT_NON_CONFORMING_SWPRINTFS

#include<Windows.h>
#include<tchar.h>

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

int WINAPI WinMain(
    HINSTANCE hInstance,
    HINSTANCE hPrevInstance,
    LPSTR lpCmdLine,
    int iCmdShow
    )
{
    TCHAR szAppName[] = TEXT("StokFont");
    HWND hwnd;
    MSG msg;
    WNDCLASSEX wndClass;

    wndClass.cbSize = sizeof(WNDCLASSEX);
    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.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
    wndClass.hInstance = hInstance;
    wndClass.lpfnWndProc = WindowProc;
    wndClass.lpszClassName = szAppName;
    wndClass.lpszMenuName = NULL;
    wndClass.style = CS_VREDRAW | CS_HREDRAW;

    if (!RegisterClassEx(&wndClass))
    {
        MessageBox(NULL, TEXT("it requires Windows NT!"), TEXT("TIPS"), 0);
        return -1;
    }

    hwnd = CreateWindow(
        szAppName, TEXT("StokFont Window"),
        WS_OVERLAPPEDWINDOW|WS_VSCROLL,
        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
        NULL, NULL, hInstance, NULL
        );

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

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

    return msg.wParam;
}

LRESULT CALLBACK WindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static struct
    {
        int idStockFont;
        TCHAR* szStockFont;
    }stockFonts[]
    {
        { OEM_FIXED_FONT, TEXT("OEM_FIXED_FONT") },
        { ANSI_FIXED_FONT, TEXT("ANSI_FIXED_FONT") },
        { ANSI_VAR_FONT, TEXT("ANSI_VAR_FONT") },
        { SYSTEM_FONT, TEXT("SYSTEM_FONT") },
        { DEVICE_DEFAULT_FONT, TEXT("DEVICE_DEFAULT_FONT") },
        { SYSTEM_FIXED_FONT, TEXT("SYSTEM_FIXED_FONT") },
        { DEFAULT_GUI_FONT, TEXT("DEFAULT_GUI_FONT") }
    };
    static TCHAR szFormat[] = TEXT("%s:FaceName:%s CharSet:%d");
    static int iFont, cxChar, cyChar;
    static TEXTMETRIC tm;
    HDC hdc;
    PAINTSTRUCT ps;
    TCHAR szBuffer[50],szTextName[LF_FACESIZE];
    switch (message)
    {
    case WM_CREATE:
        SetScrollRange(hwnd, SB_VERT, 0, 6, TRUE);
        hdc = GetDC(hwnd);
        GetTextMetrics(hdc, &tm);
        cxChar = max(3 * tm.tmAveCharWidth, 2 * tm.tmMaxCharWidth);
        cyChar = tm.tmHeight + tm.tmExternalLeading + 3;
        ReleaseDC(hwnd, hdc);
        break;
    case WM_DISPLAYCHANGE:
        InvalidateRect(hwnd, NULL, TRUE);
        break;
    case WM_VSCROLL:
        switch (LOWORD(wParam))
        {
        case SB_TOP:
            iFont = 0;
            break;
        case SB_BOTTOM:
            iFont = 6;
            break;
        case SB_LINEUP:
        case SB_PAGEUP:
            iFont--;
            break;
        case SB_LINEDOWN:
        case SB_PAGEDOWN:
            iFont++;
            break;
        case SB_THUMBTRACK:
            iFont = HIWORD(wParam);
            break;
        }
        iFont = max(0, min(6, iFont));
        SetScrollPos(hwnd, SB_VERT, iFont, TRUE);
        InvalidateRect(hwnd, NULL, TRUE);
        break;
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        GetTextFace(hdc, LF_FACESIZE, szTextName);
        TextOut(hdc, 0, 0, szBuffer, _stprintf(szBuffer, szFormat, stockFonts[iFont].szStockFont, szTextName, tm.tmCharSet));
        for (int i = 0; i <= 16; i++)
        {
            MoveToEx(hdc, (i + 4)*cxChar, cyChar * 2, NULL);
            LineTo(hdc, (i + 4)*cxChar, cyChar * 19);
            MoveToEx(hdc, 3 * cxChar, (i + 3)*cyChar, NULL);
            LineTo(hdc, 20 * cxChar, (i + 3)*cyChar);
        }
        SetTextAlign(hdc, TA_TOP | TA_CENTER);
        for (int i = 0; i < 16; i++)
        {
            TextOut(hdc, (i + 4)*cxChar+cxChar/2, cyChar * 2+1, szBuffer, _stprintf(szBuffer, TEXT("%X-"), i));
            TextOut(hdc, 4 * cxChar, (i + 3)*cyChar+1, szBuffer, _stprintf(szBuffer, TEXT("-%X"), i));
        }
        for (int i = 0; i < 16; i++)
        {
            for (int j = 0; j < 16; j++)
            {
                TextOut(hdc, (j + 4)*cxChar + cxChar / 2, (i + 3)*cyChar, szBuffer, _stprintf(szBuffer, TEXT("%c"), (TCHAR)(i * 16 + j + 1)));
            }
        }
        EndPaint(hwnd, &ps);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    }
    return DefWindowProc(hwnd, message, wParam, lParam);
}

还是状态太差了，一个很简单的程序写了好长时间 。