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第四章 文本输出

发布时间:2019-10-12 09:35编辑:热门贴子浏览(82)

    新葡亰平台娱乐 1新葡亰平台娱乐 2

     1 //SYSMETS.H -- System metrics display structure
     2 #include <Windows.h>
     3 
     4 #define NUMLINES ((int) (sizeof(sysmetrics) / sizeof(sysmetrics[0])))
     5 
     6 struct  
     7 {
     8     int iIndex;
     9     TCHAR *szLabel;
    10     TCHAR *szDesc;
    11 }
    12 sysmetrics[] =
    13 {
    14     SM_CXSCREEN,            TEXT("SM_CXSCREEN"),            TEXT("Screen width in pixels"),
    15     SM_CYSCREEN,            TEXT("SM_CYSCREEN"),            TEXT("Screen height in pixels"),
    16     SM_CXVSCROLL,            TEXT("SM_CXVSCROLL"),            TEXT("Vertical scroll width"),
    17     SM_CYHSCROLL,            TEXT("SM_CYHSCROLL"),            TEXT("Horizontal scroll height"),
    18     SM_CYCAPTION,            TEXT("SM_CYCAPTION"),            TEXT("Caption bar height"),
    19     SM_CXBORDER,            TEXT("SM_CXBORDER"),            TEXT("Window border width"),
    20     SM_CYBORDER,            TEXT("SM_CYBORDER"),            TEXT("Window border height"),
    21     SM_CXFIXEDFRAME,        TEXT("SM_CXFIXEDFRAME"),        TEXT("Dialog window frame width"),
    22     SM_CYFIXEDFRAME,        TEXT("SM_CYFIXEDFRAME"),        TEXT("Dialog window frame height"),
    23     SM_CYVTHUMB,            TEXT("SM_CYVTHUMB"),            TEXT("Vertical scroll thumb height"),
    24     SM_CXHTHUMB,            TEXT("SM_CXHTHUMB"),            TEXT("Horizontal scroll thumb width"),
    25     SM_CXICON,                TEXT("SM_CXICON"),                TEXT("Icon width"),
    26     SM_CYICON,                TEXT("SM_CYICON"),                TEXT("Icon height"),
    27     SM_CXCURSOR,            TEXT("SM_CXCURSOR"),            TEXT("Cursor width"),
    28     SM_CYCURSOR,            TEXT("SM_CYCURSOR"),            TEXT("Cursor height"),
    29     SM_CYMENU,                TEXT("SM_CYMENU"),                TEXT("Menu bar height"),
    30     SM_CXFULLSCREEN,        TEXT("SM_CXFULLSCREEN"),        TEXT("Full screen client area width"),
    31     SM_CYFULLSCREEN,        TEXT("SM_CYFULLSCREEN"),        TEXT("Full screen client area height"),
    32     SM_CYKANJIWINDOW,        TEXT("SM_CYKANJIWINDOW"),        TEXT("Kanji window height"),
    33     SM_MOUSEPRESENT,        TEXT("SM_MOUSEPRESENT"),        TEXT("Mouse present flag"),
    34     SM_CYVSCROLL,            TEXT("SM_CYVSCROLL"),            TEXT("Vertical scroll arrow height"),
    35     SM_CXHSCROLL,            TEXT("SM_CXHSCROLL"),            TEXT("Horizontal scroll arrow width"),
    36     SM_DEBUG,                TEXT("SM_DEBUG"),                TEXT("Debug version flag"),
    37     SM_SWAPBUTTON,            TEXT("SM_SWAPBUTTON"),            TEXT("Mouse buttons swapped flag"),
    38     SM_CXMIN,                TEXT("SM_CXMIN"),                TEXT("Minimum window width"),
    39     SM_CYMIN,                TEXT("SM_CYMIN"),                TEXT("Minimum window height"),
    40     SM_CXSIZE,                TEXT("SM_CXSIZE"),                TEXT("Min/Max/Close button width"),
    41     SM_CYSIZE,                TEXT("SM_CYSIZE"),                TEXT("Min/Max/Close button height"),
    42     SM_CXSIZEFRAME,            TEXT("SM_CXSIZEFRAME"),            TEXT("Window sizing frame width"),
    43     SM_CYSIZEFRAME,            TEXT("SM_CYSIZEFRAME"),            TEXT("Window sizing frame height"),
    44     SM_CXMINTRACK,            TEXT("SM_CXMINTRACK"),            TEXT("Minimum window tracking width"),
    45     SM_CYMINTRACK,            TEXT("SM_CYMINTRACK"),            TEXT("Minimum window tracking height"),
    46     SM_CXDOUBLECLK,            TEXT("SM_CXDOUBLECLK"),            TEXT("Double click x tolerance"),
    47     SM_CYDOUBLECLK,            TEXT("SM_CYDOUBLECLK"),            TEXT("Double click y tolerance"),
    48     SM_CXICONSPACING,        TEXT("SM_CXICONSPACING"),        TEXT("Horizontal icon spacing"),
    49     SM_CYICONSPACING,        TEXT("SM_CYICONSPACING"),        TEXT("Vertical icon spacing"),
    50     SM_MENUDROPALIGNMENT,    TEXT("SM_MENUDROPALIGMENT"),    TEXT("Left or right menu drop"),
    51     SM_PENWINDOWS,            TEXT("SM_PENWINDOWS"),            TEXT("Pen extensions installed"),
    52     SM_DBCSENABLED,            TEXT("SM-DBCSENABLED"),            TEXT("Double-Byte Char Set enable"),
    53     SM_CMOUSEBUTTONS,        TEXT("SM_CMOUSEBUTTONS"),        TEXT("Number of mouse buttons"),
    54     SM_SECURE,                TEXT("SM_SECURE"),                TEXT("Security present flag"),
    55     SM_CXEDGE,                TEXT("SM_CXEDGE"),                TEXT("3-D border width"),
    56     SM_CYEDGE,                TEXT("SM_CYEDGE"),                TEXT("3-D border height"),
    57     SM_CXMINSPACING,        TEXT("SM_CXMINSPACING"),        TEXT("Minimized window spacing width"),
    58     SM_CYMINSPACING,        TEXT("SM-CYMINSPACING"),        TEXT("Minimized window spacing height"),
    59     SM_CXSMICON,            TEXT("SM_CXSMICON"),            TEXT("Small icon width"),
    60     SM_CYSMICON,            TEXT("SM_CYSMICON"),            TEXT("Small icon height"),
    61     SM_CYSMCAPTION,            TEXT("SM_CYSMCAPTION"),            TEXT("Small caption height"),
    62     SM_CXSMSIZE,            TEXT("SM_CXSMSIZE"),            TEXT("Small caption button width"),
    63     SM_CYSMSIZE,            TEXT("SM_CYSMSIZE"),            TEXT("Small caption button height"),
    64     SM_CXMENUSIZE,            TEXT("SM_CXMENUSIZE"),            TEXT("Menu bar button width"),
    65     SM_CYMENUSIZE,            TEXT("SM_CYMENUSIZE"),            TEXT("Menu bar button height"),
    66     SM_ARRANGE,                TEXT("SM_ARRANGE"),                TEXT("How minimized windows arranged"),
    67     SM_CXMINIMIZED,            TEXT("SM_CXMINIMIZED"),            TEXT("Minimized window width"),
    68     SM_CYMINIMIZED,            TEXT("SM_CYMINIMIZED"),            TEXT("Minimized window height"),
    69     SM_CXMAXTRACK,            TEXT("SM_CXMAXTRACK"),            TEXT("Maximum draggable width"),
    70     SM_CYMAXTRACK,            TEXT("SM_CYMAXTRACK"),            TEXT("Maximum draggable height"),
    71     SM_CXMAXIMIZED,            TEXT("SM_CXMAXIMIZED"),            TEXT("Width of maximized window"),
    72     SM_CYMAXIMIZED,            TEXT("SM_CYMAXIMIZED"),            TEXT("Height of maximized windwo"),
    73     SM_NETWORK,                TEXT("SM_NETWORK"),                TEXT("Network present flag"),
    74     SM_CLEANBOOT,            TEXT("SM_CLEANBOOT"),            TEXT("How system was booted"),
    75     SM_CXDRAG,                TEXT("SM_CXDRAG"),                TEXT("Avoid drag x tolerance"),
    76     SM_CYDRAG,                TEXT("SM_CYDRAG"),                TEXT("Avoid drag x tolerance"),
    77     SM_SHOWSOUNDS,            TEXT("SM_SHOWSOUNDS"),            TEXT("Present sounds visually"),
    78     SM_CXMENUCHECK,            TEXT("SM_CXMENUCHECK"),            TEXT("Menu check-mark width"),
    79     SM_CYMENUCHECK,            TEXT("SM_CYMENUCHECK"),            TEXT("Menu check-mark height"),
    80     SM_SLOWMACHINE,            TEXT("SM_SLOWMACHINE"),            TEXT("Slow processor flag"),
    81     SM_MIDEASTENABLED,        TEXT("SM_MIDEASTENABLE"),        TEXT("Hebrew and Arabic enabled flag"),
    82     SM_MOUSEWHEELPRESENT,    TEXT("SM_MOUSEWHEELPRESENT"),    TEXT("Mouse wheel present flag"),
    83     SM_XVIRTUALSCREEN,        TEXT("SM_XVIRTUALSCREEN"),        TEXT("Virtual screen x origin"),
    84     SM_YVIRTUALSCREEN,        TEXT("SM_YVIRTUALSCREEN"),        TEXT("Virtual screen y origin"),
    85     SM_CXVIRTUALSCREEN,        TEXT("SM_CXVIRTUALSCREEN"),        TEXT("Virtual screen width"),
    86     SM_CYVIRTUALSCREEN,        TEXT("SM_CYVIRTUALSCREEN"),        TEXT("Virtual screen height"),
    87     SM_CMONITORS,            TEXT("SM_CMONITORS"),            TEXT("Number of monitors"),
    88     SM_SAMEDISPLAYFORMAT,    TEXT("SM_SAMEDISPLAYFORMAT"),    TEXT("Same color format flag")
    89 };
    

    新葡亰平台娱乐,SYSMETS.H

    新葡亰平台娱乐 3新葡亰平台娱乐 4

      1 //SYSMETS3.C--System Metrics Display Program No.3(c) Charles Petzold, 1998
      2 #include <Windows.h>
      3 #include "SYSMETS.h"
      4 
      5 LRESULT CALLBACK WndPorc(HWND, UINT, WPARAM, LPARAM);
      6 
      7 int WINAPI WinMain( __in HINSTANCE hInstance
      8                 , __in_opt HINSTANCE hPrevInstance
      9                 , __in LPSTR lpCmdLine
     10                 , __in int nShowCmd )
     11 {
     12     static TCHAR szAppName[] = TEXT("Sysmets3");
     13     HWND hwnd;
     14     MSG msg;
     15     WNDCLASS wndclass;
     16 
     17     wndclass.style = CS_HREDRAW | CS_VREDRAW;
     18     wndclass.lpfnWndProc = WndPorc;
     19     wndclass.cbClsExtra = 0;
     20     wndclass.cbWndExtra = 0;
     21     wndclass.hInstance = hInstance;
     22     wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
     23     wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
     24     wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
     25     wndclass.lpszClassName = szAppName;
     26     wndclass.lpszMenuName = NULL;
     27 
     28     if (!RegisterClass(&wndclass))
     29     {
     30         MessageBox(NULL, TEXT("Program requires windows NT!")
     31             , szAppName, MB_ICONERROR);
     32         return 0;
     33     }
     34 
     35     hwnd = CreateWindow(szAppName, TEXT("Get System Metrics No.3")
     36         , WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL
     37         , CW_USEDEFAULT, CW_USEDEFAULT
     38         , CW_USEDEFAULT, CW_USEDEFAULT
     39         , NULL, NULL, hInstance, NULL);
     40 
     41     ShowWindow(hwnd, nShowCmd);
     42     UpdateWindow(hwnd);
     43 
     44     while (GetMessage(&msg, hwnd, 0, 0))
     45     {
     46         TranslateMessage(&msg);
     47         DispatchMessage(&msg);
     48     }
     49 
     50     return msg.wParam;
     51 }
     52 
     53 LRESULT CALLBACK WndPorc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
     54 {
     55     static int cxChar, cxCaps, cyChar, cxClient, cyClient, iMaxWidth;
     56     HDC hdc;
     57     int i, x, y, iVertPos, iHorzPos, iPaintBeg, iPaintEnd;
     58     PAINTSTRUCT ps;
     59     SCROLLINFO si;
     60     TCHAR szBuffer[10];
     61     TEXTMETRIC tm;
     62 
     63     switch (message)
     64     {
     65     case WM_CREATE:
     66         hdc = GetDC(hwnd);
     67         GetTextMetrics(hdc, &tm);
     68         cxChar = tm.tmAveCharWidth;
     69         cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2;
     70         cyChar = tm.tmHeight + tm.tmExternalLeading;
     71         ReleaseDC(hwnd, hdc);
     72 
     73         //save the width of the three columns
     74         iMaxWidth = 40 * cxChar + 22 * cxCaps;
     75         return 0;
     76 
     77     case WM_SIZE:
     78         cxClient = LOWORD(lParam);
     79         cyClient = HIWORD(lParam);
     80         
     81         //set vertical scroll bar range and page size
     82         si.cbSize = sizeof(SCROLLINFO);
     83         si.fMask = SIF_RANGE | SIF_PAGE;
     84         si.nMin = 0;
     85         si.nMax = NUMLINES - 1;
     86         si.nPage = cyClient / cyChar;
     87         SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
     88 
     89         //set horizontal scroll bar range and page size
     90         si.cbSize = sizeof(SCROLLINFO);
     91         si.fMask = SIF_RANGE | SIF_PAGE;
     92         si.nMin = 0;
     93         si.nMax = iMaxWidth / cxChar;
     94         si.nPage = cxClient / cxChar;
     95         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
     96 
     97         return 0;
     98 
     99     case WM_VSCROLL:
    100         //get all the vertical scroll bar information
    101         si.cbSize = sizeof(SCROLLINFO);
    102         si.fMask = SIF_ALL;
    103         GetScrollInfo(hwnd, SB_VERT, &si);
    104 
    105         //save the position for comparison later on
    106         iVertPos = si.nPos;
    107 
    108         switch (LOWORD(wParam))
    109         {
    110         case SB_TOP:
    111             si.nPos = si.nMin;
    112             break;
    113         case SB_BOTTOM:
    114             si.nPos = si.nMax;
    115             break;
    116         case SB_LINEUP:
    117             si.nPos -= 1;
    118             break;
    119         case SB_LINEDOWN:
    120             si.nPos += 1;
    121             break;
    122         case SB_PAGEUP:
    123             si.nPos -= si.nPage;
    124             break;
    125         case SB_PAGEDOWN:
    126             si.nPos += si.nPage;
    127             break;
    128         case SB_THUMBTRACK:
    129             si.nPos = si.nTrackPos;
    130             break;
    131         default:
    132             break;
    133         }
    134 
    135         //set the position and then retrieve it. Due to adjustments
    136         //by windows it may not be the same as the value set.
    137         si.fMask = SIF_POS;
    138         SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
    139         GetScrollInfo(hwnd, SB_VERT, &si);
    140 
    141         //if the position has changed, scroll the window and update it
    142         if (si.nPos != iVertPos)
    143         {
    144             ScrollWindow(hwnd, 0, cyChar * (iVertPos - si.nPos)
    145                 , NULL, NULL);
    146             UpdateWindow(hwnd);
    147         }
    148 
    149         return 0;
    150 
    151     case WM_HSCROLL:
    152         //get all the vertical scroll bar information
    153         si.cbSize = sizeof(SCROLLINFO);
    154         si.fMask = SIF_ALL;
    155 
    156         //save the position for comparison later on
    157         GetScrollInfo(hwnd, SB_HORZ, &si);
    158         iHorzPos = si.nPos;
    159 
    160         switch (LOWORD(wParam))
    161         {
    162         case SB_LINELEFT:
    163             si.nPos -= 1;
    164             break;
    165         case SB_LINERIGHT:
    166             si.nPos += 1;
    167             break;
    168         case SB_PAGELEFT:
    169             si.nPos -= si.nPage;
    170             break;
    171         case SB_PAGERIGHT:
    172             si.nPos += si.nPage;
    173         case SB_THUMBPOSITION:
    174             si.nPos = si.nTrackPos;
    175             break;
    176         default:
    177             break;
    178         }
    179 
    180         //set the position and then retrieve it. Due to adjustments
    181         //by windows it may not be the same as the value set.
    182         si.fMask = SIF_POS;
    183         SetScrollInfo(hwnd, SB_HORZ, &si, TRUE);
    184         GetScrollInfo(hwnd, SB_HORZ, &si);
    185 
    186         //if the position has changed, scroll the window
    187         if (si.nPos != iHorzPos)
    188         {
    189             ScrollWindow(hwnd, cxChar * (iHorzPos - si.nPos)
    190                 , 0, NULL, NULL);
    191         }
    192 
    193         return 0;
    194 
    195     case WM_PAINT:
    196         hdc = BeginPaint(hwnd, &ps);
    197 
    198         //get vertical scroll bar position
    199         si.cbSize = sizeof(SCROLLINFO);
    200         si.fMask = SIF_POS;
    201         GetScrollInfo(hwnd, SB_VERT, &si);
    202         iVertPos = si.nPos;
    203 
    204         //get horizontal scroll bar position
    205         GetScrollInfo(hwnd, SB_HORZ, &si);
    206         iHorzPos = si.nPos;
    207 
    208         //find painting limits
    209         iPaintBeg = max(0, iVertPos + ps.rcPaint.top / cyChar);
    210         iPaintEnd = min(NUMLINES - 1, iVertPos + ps.rcPaint.bottom / cyChar);
    211 
    212         for (i = iPaintBeg; i <= iPaintEnd; ++i)
    213         {
    214             x = cxChar * (1 - iHorzPos);
    215             y = cyChar * (i - iVertPos);
    216 
    217             TextOut(hdc, x, y, sysmetrics[i].szLabel
    218                 , lstrlen(sysmetrics[i].szLabel));
    219 
    220             TextOut(hdc, x + 22 * cxCaps, y
    221                 , sysmetrics[i].szDesc, lstrlen(sysmetrics[i].szDesc));
    222 
    223             SetTextAlign(hdc, TA_RIGHT | TA_TOP);
    224 
    225             TextOut(hdc, x + 22 * cxCaps + 40 * cxChar, y, szBuffer
    226                 , wsprintf(szBuffer, TEXT("%5d"), GetSystemMetrics(sysmetrics[i].iIndex)));
    227 
    228             SetTextAlign(hdc, TA_LEFT | TA_TOP);
    229         }
    230 
    231         EndPaint(hwnd, &ps);
    232         return 0;
    233 
    234     case WM_DESTROY:
    235         PostQuitMessage(0);
    236         return 0;
    237     }
    238 
    239     return DefWindowProc(hwnd, message, wParam, lParam);
    240 }
    

    SYSMETS3.C

     

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