// exam.cpp : Defines the entry point for the application.
//#include "stdafx.h"
#include "resource.h"
#include <windows.h>
#include <stdlib.h>
#include <string.h>
#include <commdlg.h>
#include <commctrl.h>#define MAX_LOADSTRING 100// Global Variables:
HINSTANCE hInst;                                // current instance
TCHAR szTitle[MAX_LOADSTRING];                              // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];                                // The title bar textCHOOSECOLOR  chc;
bool IsDraw=false;
bool IsReverse=false;
int g_iCount=0;RECT rect1;
int Graphics=0;
COLORREF clref[16]={0x00ff0000};
bool IsFill=false;
int iWidth=0;struct DATASTORE      //图形数据存储结构
{RECT rect1;            //起点,终点int Graphics;        //图形形状COLORREF pColor;      //画笔颜色bool IsFill;          //画笔风格int iWidth;           //画笔宽度//int bColor;         //画刷颜色
};struct DATASTORE DataStore[1000]; // Foward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK    About(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK    Width(HWND, UINT, WPARAM, LPARAM);int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR     lpCmdLine,int       nCmdShow)
{// TODO: Place code here.MSG msg;HACCEL hAccelTable;// Initialize global stringsLoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);LoadString(hInstance, IDC_EXAM, szWindowClass, MAX_LOADSTRING);MyRegisterClass(hInstance);// Perform application initialization:if (!InitInstance (hInstance, nCmdShow)) {return FALSE;}hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_EXAM);// Main message loop:while (GetMessage(&msg, NULL, 0, 0)) {if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) {TranslateMessage(&msg);DispatchMessage(&msg);}}return msg.wParam;
}//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage is only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{WNDCLASSEX wcex;wcex.cbSize = sizeof(WNDCLASSEX); wcex.style          = CS_HREDRAW | CS_VREDRAW;wcex.lpfnWndProc = (WNDPROC)WndProc;wcex.cbClsExtra     = 0;wcex.cbWndExtra        = 0;wcex.hInstance     = hInstance;wcex.hIcon         = LoadIcon(hInstance, (LPCTSTR)IDI_EXAM);wcex.hCursor      = LoadCursor(NULL, IDC_ARROW);wcex.hbrBackground   = (HBRUSH)(COLOR_WINDOW+1);wcex.lpszMenuName  = (LPCSTR)IDC_EXAM;wcex.lpszClassName  = szWindowClass;wcex.hIconSm       = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);return RegisterClassEx(&wcex);
}//
//   FUNCTION: InitInstance(HANDLE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{HWND hWnd;hInst = hInstance; // Store instance handle in our global variablehWnd = 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;
}//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{int wmId, wmEvent;PAINTSTRUCT ps;HDC hDC;HBRUSH hBrush;HPEN hPen;HMENU hMenu;TCHAR szHello[MAX_LOADSTRING];LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING);WORD x,y;x = LOWORD(lParam);     //得到鼠标的位置.y = HIWORD(lParam);hMenu=GetMenu(hWnd);switch (message) {case WM_CREATE:            //选择颜色通用对话框chc.lStructSize = sizeof(CHOOSECOLOR);      //结构大小chc.hwndOwner = hWnd;                        //父窗口句柄chc.rgbResult = 0;                          //设定默认颜色chc.lpCustColors = clref;                  //指向用户自定义颜色数组的指针chc.Flags = 0;                             //标志chc.lCustData = 0;                         chc.lpfnHook = NULL;                       //钩子函数指针.同对话框处理函数功能一样chc.lpTemplateName = NULL;break;case WM_COMMAND:wmId    = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections:switch (wmId){case IDM_RECTANGLE:CheckMenuItem(hMenu,IDM_RECTANGLE,MF_CHECKED);CheckMenuItem(hMenu,IDM_CIRCLE,MF_UNCHECKED);CheckMenuItem(hMenu,IDM_LINE,MF_UNCHECKED);Graphics=2;break;case IDM_CIRCLE:CheckMenuItem(hMenu,IDM_CIRCLE,MF_CHECKED);CheckMenuItem(hMenu,IDM_RECTANGLE,MF_UNCHECKED);CheckMenuItem(hMenu,IDM_LINE,MF_UNCHECKED);Graphics=1;break;case IDM_LINE:CheckMenuItem(hMenu,IDM_LINE,MF_CHECKED);CheckMenuItem(hMenu,IDM_RECTANGLE,MF_UNCHECKED);CheckMenuItem(hMenu,IDM_CIRCLE,MF_UNCHECKED);Graphics=0;break;case IDM_COLOR:ChooseColor(&chc);break;case IDM_WIDTH:DialogBox(hInst, (LPCTSTR)IDD_WIDTH, hWnd, (DLGPROC)Width);break;case IDM_FILL:CheckMenuItem(hMenu,IDM_FILL,MF_CHECKED);CheckMenuItem(hMenu,IDM_OPAQUE,MF_UNCHECKED);IsFill=true;break;case IDM_OPAQUE:CheckMenuItem(hMenu,IDM_OPAQUE,MF_CHECKED);CheckMenuItem(hMenu,IDM_FILL,MF_UNCHECKED);IsFill=false;break;case IDM_REVERSE:IsReverse=true;InvalidateRect(hWnd,NULL,TRUE);break;case IDM_RESET:IsReverse=false;InvalidateRect(hWnd,NULL,TRUE);break;case IDM_ABOUT:DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);break;case IDM_EXIT:DestroyWindow(hWnd);break;default:return DefWindowProc(hWnd, message, wParam, lParam);}break;case WM_LBUTTONDOWN:IsDraw=true;rect1.left = x;          rect1.top = y;//MoveToEx(hDC,rect1.left = x,rect1.top = y,NULL);break;case WM_LBUTTONUP:DataStore[g_iCount].rect1 = rect1;//DataStore[g_iCount].ptEnd = ptEnd;DataStore[g_iCount].Graphics = Graphics;DataStore[g_iCount].pColor = chc.rgbResult;DataStore[g_iCount].IsFill = IsFill;DataStore[g_iCount].iWidth = iWidth;//DataStore[g_iCount].bColor = bSelection;g_iCount++;IsDraw=false;break;case WM_MOUSEMOVE:            rect1.right = x;       rect1.bottom = y;if(IsDraw==true){InvalidateRect(hWnd,NULL,TRUE);    //发出重绘信息.UpdateWindow(hWnd);}break;case WM_RBUTTONDOWN:POINT point;point.x=LOWORD(lParam);point.y=HIWORD(lParam);ClientToScreen(hWnd,&point);TrackPopupMenu(GetSubMenu(hMenu,3),TPM_LEFTALIGN,point.x,point.y,0,hWnd,NULL);break;case WM_PAINT:hDC = BeginPaint(hWnd, &ps);RECT rt;GetClientRect(hWnd, &rt);SetMapMode(hDC,MM_ANISOTROPIC);SetViewportOrgEx(hDC,(rt.left+rt.right)/2,(rt.bottom+rt.right)/2,NULL);  SetViewportOrgEx(hDC,0,0,NULL); int i;for(i = 0; i <g_iCount; i++){if(IsReverse==true){SetViewportExtEx(hDC,1,-1,0);SetViewportOrgEx(hDC,0,rt.bottom-rt.top ,NULL);}else{SetViewportExtEx(hDC,1,1,0);SetViewportOrgEx(hDC,0,0,NULL);}hPen=CreatePen(PS_SOLID,DataStore[i].iWidth,DataStore[i].pColor );if(DataStore[i].IsFill==true){hBrush=CreateSolidBrush(DataStore[i].pColor);}else{hBrush=(HBRUSH)GetStockObject(NULL_BRUSH);}SelectObject(hDC,hBrush);SelectObject(hDC,hPen);if(DataStore[i].Graphics==0){MoveToEx(hDC,DataStore[i].rect1.left,DataStore[i].rect1.top,NULL);LineTo(hDC,DataStore[i].rect1.right,DataStore[i].rect1.bottom);}if(DataStore[i].Graphics==1){   Ellipse(hDC,DataStore[i].rect1.left,DataStore[i].rect1.top,DataStore[i].rect1.right,DataStore[i].rect1.bottom);}if(DataStore[i].Graphics==2){ Rectangle(hDC,DataStore[i].rect1.left,DataStore[i].rect1.top,DataStore[i].rect1.right,DataStore[i].rect1.bottom);}DeleteObject(hPen);DeleteObject(hBrush);}hPen=CreatePen(PS_SOLID,iWidth,chc.rgbResult);if(IsFill==true){hBrush=CreateSolidBrush(chc.rgbResult);}else{hBrush=(HBRUSH)GetStockObject(NULL_BRUSH);}SelectObject(hDC,hBrush);SelectObject(hDC,hPen);// TODO: Add any drawing code here...//DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER);if (IsDraw==true){if(Graphics==0){MoveToEx(hDC,rect1.left,rect1.top,NULL);LineTo(hDC,rect1.right,rect1.bottom);}if(Graphics==1){    Ellipse(hDC,rect1.left,rect1.top,rect1.right,rect1.bottom);}if(Graphics==2){  Rectangle(hDC,rect1.left,rect1.top,rect1.right,rect1.bottom);}}DeleteObject(hPen);DeleteObject(hBrush);EndPaint(hWnd, &ps);break;case WM_DESTROY:PostQuitMessage(0);break;default:return DefWindowProc(hWnd, message, wParam, lParam);}return 0;
}// Mesage handler for about box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{switch (message){case WM_INITDIALOG:return TRUE;case WM_COMMAND:if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) {EndDialog(hDlg, LOWORD(wParam));return TRUE;}break;}return FALSE;
}
LRESULT CALLBACK Width(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{HWND   hWndSlider=GetDlgItem(hDlg, IDC_SLIDER);switch (message){case WM_INITDIALOG:SendMessage(hWndSlider, TBM_SETTICFREQ , 1, 0);SendMessage(hWndSlider, TBM_SETRANGE, 1, MAKELONG(1,10));return TRUE;case WM_SHOWWINDOW:SendMessageW(hWndSlider,TBM_SETPOS, 1,iWidth);//设置slider控件break;case WM_COMMAND:if (LOWORD(wParam) == IDOK) {iWidth= SendMessageW(hWndSlider, TBM_GETPOS, 0, 0);EndDialog(hDlg, LOWORD(wParam));return TRUE;}if (LOWORD(wParam) == IDCANCEL) {EndDialog(hDlg, LOWORD(wParam));return TRUE;}break;}return FALSE;
}