Windows程序设计第5版滚动条的问题
我照着《Windows程序设计 第五版》中的SYSMETS3.c程序敲了一遍代码，可在编译的时候老是出错。#include
#define NUMLINES ((int)((sizeof sysmetrics)/(sizeof sysmetrics[0]))
struct
{
int iTndex;
TCHAR *szLabel;
TCHAR *szDesc;
}
sysmetrics[]=
{
SM_CXSCREEN, TEXT("SM_CXSCREEN"), TEXT("Screen width in pixels"),
SM_CYSCREEN, TEXT("SM_CYSCREEN"), TEXT("Sxreen height in pixels"),
SM_CXVSCROLL, TEXT("SM_CXVSCROLL"), TEXT("Vertical scroll width"),
SM_CYHSCROLL, TEXT("SM_CYHSCROLL"), TEXT("Horizonta scroll height"),
SM_CYCAPTION, TEXT("SM_CYCAPTION"), TEXT("Caption bar height"),
SM_CXBORDER, TEXT("SM_CXBORDER"), TEXT("Window border width"),
SM_CYBORDER, TEXT("SM_CYBORDER"), TEXT("Window border height")
};
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
char szClassName[ ] = "CodeBlocksWindowsApp";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default colour as the background of the window */
wincl.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Code::Blocks Template Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW|WS_VSCROLL|WS_HSCROLL, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nCmdShow);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int cxChar,cxCaps,cyChar,cxClient,cyClient,iMaxWidth;
HDC hdc;
int i,x,y,iVertPos,iHorzPos,iPaintBeg,iPaintEnd;
PAINTSTRUCT ps;
SCROLLINFO si;
TCHAR szBuffer[10];
TEXTMETRIC tm;
switch (message) /* handle the messages */
{
case WM_CREATE:
hdc=GetDC(hwnd);
GetTextMetrics(hdc,&tm);
cxChar=tm.tmAveCharWidth;
cxCaps=(tm.tmPitchAndFamily&1?3:2)*cxChar/2;
cyChar=tm.tmHeight+tm.tmExternalLeading;
ReleaseDC(hwnd,hdc);
iMaxWidth=40*cxChar+22*cxCaps;
return 0;
case WM_SIZE:
cxClient = LOWORD(lParam);
cyClient = HIWORD(lParam);
si.cbSize= sizeof(si);
si.fMask = SIF_RANGE|SIF_PAGE;
si.nMin = 0;
si.nMax = (NUMLINES - 1);
si.nPage = cyClient/cyChar;
SetScrollInfo(hwnd,SB_VERT,&si,TRUE);
si.cbSize = sizeof(si);
si.fMask = SIF_RANGE|SIF_PAGE;
si.nMin = 0;
si.nMax = 2+iMaxWidth/cxChar;
si.nPage = cxClient/cxChar;
SetScrollInfo(hwnd,SB_HORZ,&si,TRUE);
return 0;
case WM_VSCROLL:
si.cbSize =sizeof(si);
si.fMask =SIF_ALL;
GetScrollInfo(hwnd,SB_VERT,&si);
iVertPos=si.nPos;;
iVertPos=si.nPos;
switch(LOWORD(wParam))
{
case SB_TOP:
si.nPos=si.nMin;
break;
case SB_BOTTOM:
si.nPos=si.nMax;
break;
case SB_LINEUP:
si.nPos-=1;
break;
case SB_LINEDOWN:
si.nPos+=1;
break;
case SB_PAGEUP:
si.nPos-=si.nPage;
break;
case SB_PAGEDOWN:
si.nPos+=si.nPage;
break;
case SB_THUMBTRACK:
si.nPos=si.nTrackPos;
break;
default:
break;
}
si.fMask=SIF_POS;
SetScrollInfo(hwnd,SB_VERT,&si,TRUE);
GetScrollInfo(hwnd,SB_VERT,&si);
if(si.nPos!=iVertPos)
{
ScrollWindow(hwnd,0,cyChar*(iVertPos-si.nPos),NULL,NULL);
UpdateWindow(hwnd);
}
return 0;
case WM_HSCROLL:
si.cbSize=sizeof(si);
si.fMask=SIF_ALL;
GetScrollInfo(hwnd,SB_HORZ,&si);
iHorzPos=si.nPos;
switch(LOWORD(wParam))
{
case SB_LINELEFT:
si.nPos-=1;
break;
case SB_LINERIGHT:
si.nPos+=1;
break;
case SB_PAGELEFT:
si.nPos-=si.nPage;
break;
case SB_PAGERIGHT:
si.nPos+=si.nPage;
break;
case SB_THUMBPOSITION:
si.nPos=si.nTrackPos;
break;
default:
break;
}
si.fMask=SIF_POS;
SetScrollInfo(hwnd,SB_HORZ,&si,TRUE);
GetScrollInfo(hwnd,SB_HORZ,&si);
if(si.nPos!=iHorzPos)
{
ScrollWindow(hwnd,cxChar*(iHorzPos-si.nPos),0,NULL,NULL);
}
return 0;
case WM_PAINT:
hdc=BeginPaint(hwnd,&ps);
si.cbSize=sizeof(si);
si.fMask=SIF_POS;
GetScrollInfo(hwnd,SB_VERT,&si);
iVertPos=si.nPos;
GetScrollInfo(hwnd,SB_HORZ,&si);
iHorzPos=si.nPos;
iPaintBeg = max(0,iVertPos+ps.rcPaint.top/cyChar);
iPaintEnd = min(NUMLINES-1,iVertPos+ps.rcPaint.bottom/cyChar);
for(i=iPaintBeg;i<=iPaintEnd;i++)
{
x=cxChar*(1-iHorzPos);
y=cyChar*(i-iVertPos);
TextOut(hdc,x,y,sysmetrics[i].szLabel,lstrlen(sysmetrics[i].szLabel));
TextOut(hdc,x+22*cxCaps,y,sysmetrics[i].szDesc,lstrlen(sysmetrics[i].szDesc));
SetTextAlign(hdc,TA_RIGHT|TA_TOP);
TextOut(hdc,x+22*cxCaps+40*cxChar,y,szBuffer,wsprintf(szBuffer,TEXT("%5d"),GetSystemMetrics(sysmetrics[i].iTndex)));
SetTextAlign(hdc,TA_LEFT|TA_TOP);
}
EndPaint(hwnd,&ps);
return 0;
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}
VC++6.0提示错误：
error C2143: syntax error : missing ')' before ';'
error C2143: syntax error : missing ')' before ':'
error C2143: syntax error : missing ')' before ';'
C-Free提示错误：
--------------------配置: mingw5 - GUI Release, 编译器类型: MinGW--------------------
检查文件依赖性...
正在编译 C:\Users\Administrator\Documents\C-Free\Temp\未命名1.c...
[Error] C:\Users\Administrator\Documents\C-Free\Temp\未命名1.c:122: error: syntax error before ';' token
[Error] C:\Users\Administrator\Documents\C-Free\Temp\未命名1.c:219: error: syntax error before ':' token
[Error] C:\Users\Administrator\Documents\C-Free\Temp\未命名1.c:232: error: case label not within a switch statement
[Error] C:\Users\Administrator\Documents\C-Free\Temp\未命名1.c:238: error: syntax error before "return"
构建中止 未命名1: 4 个错误, 0 个警告
CodeBlocks提示错误：
E:\Test\SYSMETS3\main.cpp:103:35: error: expected ')' before ';' token
E:\Test\SYSMETS3\main.cpp:200:25: error: expected ')' before ':' token
E:\Test\SYSMETS3\main.cpp:200:74: error: expected ':' before ';' token
E:\Test\SYSMETS3\main.cpp:200:74: error: expected primary-expression before ';' token
E:\Test\SYSMETS3\main.cpp:200:74: error: expected ')' before ';' token
E:\Test\SYSMETS3\main.cpp:200:74: error: expected ')' before ';' token
除此之外还有一大堆 “warning: deprecated conversion from string constant to 'TCHAR* {aka char*}' [-Wwrite-strings]”的警告。
仔细检查了好几遍也没找出错在哪，求前辈指点。
