VC/Windows字体度量参数研究及绘制效果_柳鲲鹏的博客-CSDN博客
看了上一篇博文，也许有人想看看代码，自己调试一下。这是代码：
// FontTest.cpp : 定义应用程序的入口点。 // #include "stdafx.h" #include <stdio.h> #include <stdlib.h> #include <Windows.h> //#include <atltypes.h> //#include <afxwin.h> #include "FontTest.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); HFONT CreateMyFont(TCHAR *fontName, int height); int APIENTRY _tWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPTSTR lpCmdLine, _In_ 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_FONTTEST, 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_FONTTEST)); // 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。 // 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_FONTTEST)); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = MAKEINTRESOURCE(IDC_FONTTEST); 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; } HFONT CreateMyFont(TCHAR *fontName, int size) { //size = MulDiv(-size,GetDeviceCaps(GetDC(NULL),LOGPIXELSX),72); return CreateFont //创建自定义字体 ( size, //字体的高度 0, //由系统根据高宽比选取字体最佳宽度值 0, //文本的倾斜度为，表示水平 0, //字体的倾斜度为 FW_HEAVY, 0, //非斜体字 0, //无下划线 0, //无删除线 GB2312_CHARSET, //表示所用的字符集为ANSI_CHARSET OUT_DEFAULT_PRECIS, //输出精度为默认精度 CLIP_DEFAULT_PRECIS, //剪裁精度为默认精度 DEFAULT_QUALITY, //输出质量为默认值 DEFAULT_PITCH|FF_DONTCARE, //字间距和字体系列使用默认值 fontName //字体名称 ); } LRESULT paint(HWND hWnd, HDC hDC) { HFONT metricsFont; HFONT tipFont; HPEN hPen; LPWSTR title=L"泰山OFFICE"; LPWSTR fontName = L"宋体"; //LPWSTR fontName = L"Times New Roman"; int fontHeight = 100; LPWSTR testText = L"泰山Office"; RECT clientDimension; //存放客户区的尺寸 POINT begin; //保存点的信息，org表示圆心坐标 hPen=CreatePen(PS_SOLID,1,RGB(255,0,0)); SelectObject(hDC,hPen); GetClientRect(hWnd,&clientDimension); //获取客户区的尺寸 if((clientDimension.right-clientDimension.left)<400|| (clientDimension.bottom-clientDimension.top)<300) //判断屏幕尺寸 { MessageBox(hWnd,L"屏幕尺寸太小，无法绘图！",L"错误信息",0); return 0; } TCHAR buffer[100] = {0}; begin.x = 100; begin.y = 150; // {{{{{{{{{{ metricsFont=CreateMyFont(fontName, fontHeight); //创建字体 SelectObject(hDC,metricsFont); //将创建的字体句柄选入设备环境 TEXTMETRIC tm; GetTextMetrics(hDC, &tm); wsprintf(buffer, testText); TextOut(hDC,begin.x,begin.y, buffer, lstrlen(buffer)); // }}}}}}}}}} // {{{{{{{{{{ int x = begin.x; int y = begin.y; int length = 500; int yPos[10] = {0}; yPos[0] = begin.y; //leading, tmInternalLeading=0; yPos[1] = begin.y + tm.tmExternalLeading; //baseline yPos[2] = begin.y + tm.tmAscent; //tmHeight=tmDescent+tmAscent yPos[3] = begin.y + tm.tmAscent+ tm.tmDescent; tipFont=CreateMyFont(fontName, 14); SelectObject(hDC,tipFont); //将创建的字体句柄选入设备环境 for (int i=0; i<10; i++) { y = yPos[i]; if (y==0) { break; } wsprintf(buffer, L"%d", i); TextOut(hDC,x-10, y-7, buffer, lstrlen(buffer)); MoveToEx(hDC, x, y, NULL); LineTo(hDC, x+length, y); } // }}}}}}}}}} // {{{{{{{{{{ wsprintf(buffer, L"tmExternalLeading=%d, tmInternalLeading=%d", tm.tmExternalLeading, tm.tmInternalLeading); begin.x = 100; begin.y = 280; TextOut(hDC,begin.x,begin.y, buffer, lstrlen(buffer)); wsprintf(buffer, L"tmAscent=%d, tmDescent=%d, tmHeight=%d", tm.tmAscent, tm.tmDescent, tm.tmHeight); begin.y += 20; TextOut(hDC,begin.x,begin.y, buffer, lstrlen(buffer)); // }}}}}}}}}} DeleteObject(metricsFont); DeleteObject(tipFont); return 0; } // // 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; switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // 分析菜单选择: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_PAINT: hDC = BeginPaint(hWnd, &ps); paint(hWnd, hDC); EndPaint(hWnd, &ps); break; case WM_DESTROY: PostQuitMessage(0); break; 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; }
