求教问题 窗口分成五个区域 lpSize出错
Run-Time Check Failure #3 - The variable 'lpSize' is being used without being initialized.
下面是程序全部代码
// text3.cpp : 定义应用程序的入口点。
//
#include "stdafx.h"
#include "text3.h"
#define MAX_LOADSTRING 100
// 全局变量:
HINSTANCE hInst; // 当前实例
TCHAR szTitle[MAX_LOADSTRING]; // 标题栏文本
TCHAR szWindowClass[MAX_LOADSTRING]; // 主窗口类名
// 此代码模块中包含的函数的前向声明:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: 在此放置代码。
MSG msg;
HACCEL hAccelTable;
// 初始化全局字符串
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_TEXT3, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// 执行应用程序初始化:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_TEXT3));
// 主消息循环:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int) msg.wParam;
}
//
// 函数: MyRegisterClass()
//
// 目的: 注册窗口类。
//
// 注释:
//
// 仅当希望
// 此代码与添加到 Windows 95 中的“RegisterClassEx”
// 函数之前的 Win32 系统兼容时,才需要此函数及其用法。调用此函数十分重要,
// 这样应用程序就可以获得关联的
// “格式正确的”小图标。
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_TEXT3));
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = MAKEINTRESOURCE(IDC_TEXT3);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassEx(&wcex);
}
//
// 函数: InitInstance(HINSTANCE, int)
//
// 目的: 保存实例句柄并创建主窗口
//
// 注释:
//
// 在此函数中,我们在全局变量中保存实例句柄并
// 创建和显示主程序窗口。
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;
hInst = hInstance; // 将实例句柄存储在全局变量中
hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
//
// 函数: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// 目的: 处理主窗口的消息。
//
// WM_COMMAND - 处理应用程序菜单
// WM_PAINT - 绘制主窗口
// WM_DESTROY - 发送退出消息并返回
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hDC;
WORD x,y;
HCURSOR hCursor; //定义光标句柄.
HBRUSH hBrush;
LPSIZE lpSize; //窗口尺寸结构.
static char cLeftBtn[]="LEFT BUTTON"; //定义单击左键时的输出字符.
static char cRightBtn[]="RIGHT BUTTON"; //定义单击右键时的输出字符.
RECT ClientRect;
switch (message)
{
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
GetClientRect(hWnd,&ClientRect); //得到窗口大小
if(y>=0&&y<=ClientRect.bottom)
{
if(y>=0&&y<=ClientRect.bottom/5) //在此区域,是箭头.
{
hCursor=LoadCursor(NULL,IDC_ARROW);
SetCursor(hCursor);
}
else if(y>=ClientRect.bottom/5&&y<=ClientRect.bottom/5*2) //在此区域为十字图标.
{
hCursor=LoadCursor(NULL,IDC_CROSS);
SetCursor(hCursor);
}
else if(y>=ClientRect.bottom/5*2&&y<=ClientRect.bottom/5*3) //在此区域为东北西南方向的箭头光标.
{
hCursor=LoadCursor(NULL,IDC_SIZENESW);
SetCursor(hCursor);
}
else if(y>=ClientRect.bottom/5*3&&y<=ClientRect.bottom/5*4) //在此区域为西北东南方向的箭头光标.
{
hCursor=LoadCursor(NULL,IDC_SIZENS);
SetCursor(hCursor);
}
else //在此区域为等待光标.
{
hCursor=LoadCursor(NULL,IDC_WAIT);
SetCursor(hCursor);
}
}
return 0;
case WM_LBUTTONDOWN: //单击左建.
hDC=GetDC(hWnd); //得到设备环境指针.
SetBkColor(hDC,RGB(255,255,0)); //设置背景色.
TextOut(hDC,0,0,cLeftBtn,strlen(cLeftBtn)); //输出.
ReleaseDC(hWnd,hDC); //释放设备环境指针.
break;
case WM_RBUTTONDOWN: //单击右建.
hDC=GetDC(hWnd); //得到设备环境指针.
SetBkColor(hDC,RGB(255,255,0)); //设置背景色.
TextOut(hDC,0,0,cRightBtn,strlen(cRightBtn)); //输出.
ReleaseDC(hWnd,hDC); //释放设备环境指针.
break;
case WM_SIZE:
hDC=GetDC(hWnd); //得到设备环境指针.
SetMapMode(hDC,MM_ANISOTROPIC); //设置映象模式.
SetViewportExtEx(hDC,LOWORD(lParam),HIWORD(lParam),lpSize); //设置试口区域.
SetWindowExtEx(hDC,100,50,lpSize); //设置窗口区域.
hBrush=CreateSolidBrush(RGB(255,255,255)); //定义白画刷.
SelectObject(hDC,hBrush); //选入白画刷.
Rectangle(hDC,0,0,100,10); //填充矩形
DeleteObject(hBrush); //删除画刷.
hBrush=CreateSolidBrush(RGB(0,255,0)); //定义绿画刷.
SelectObject(hDC,hBrush); //选入绿画刷.
Rectangle(hDC,0,10,100,20); //填充矩形.
DeleteObject(hBrush); //删除画刷.
hBrush=CreateSolidBrush(RGB(0,0,255)); //定义蓝画刷.
SelectObject(hDC,hBrush); //选入蓝画刷.
Rectangle(hDC,0,20,100,30); //填充矩形.
DeleteObject(hBrush); //删除画刷.
hBrush=CreateSolidBrush(RGB(255,255,0)); //定义黄画刷.
SelectObject(hDC,hBrush); //选入黄画刷.
Rectangle(hDC,0,30,100,40); //填充矩形.
DeleteObject(hBrush); //删除画刷.
hBrush=CreateSolidBrush(RGB(255,0,0)); //定义红画刷.
SelectObject(hDC,hBrush); //选入红画刷.
Rectangle(hDC,0,40,100,50); //填充矩形.
DeleteObject(hBrush); //删除画刷.
ReleaseDC(hWnd,hDC); //删除设备环境指针.
break;
case WM_DESTROY: //处理退出窗口信息.
PostQuitMessage(0);
return 0;
default:
return(DefWindowProc(hWnd,message,wParam,lParam));
}
return 0;
}
// “关于”框的消息处理程序。
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam);
switch (message)
{
case WM_INITDIALOG:
return (INT_PTR)TRUE;
case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return (INT_PTR)TRUE;
}
break;
}
return (INT_PTR)FALSE;
}