字体

1：创建字体，HFONT CreateFontIndirect(const LOGFONT *lplf)，结构体LOGFONT 用于设置字体的相关参数如高度、宽度、粗体、斜体、字体名称等。

hFont = CreateFontIndirect (&lplf);

 

2：为设备上下文选择字体

hOldFont = (HFONT)SelectObject (hdc, hFont);

 

hOldFont 用于保存旧的字体，在新字体使用完后恢复之前的字体

 

3：查询字体特性

GetTextMetrics(HDC hdc, LPTEXTMETRIC lptm)

 

4：销毁字体

DeleteObject(HGDIOBJ hObject)

 

5：枚举字体

EnumFontFamilies(HDC hdc, LPCTSTR lpszFamily, FONTENUMPROC lpEnumFontFamProc, LPARAM lParam)

第二个参数lpszFamily为需要枚举的字体，如果设为NUL则枚举所有可用的字体(字体好像只能放在windows下)

 

回调函数： CALLBACK EnumFontFamProc(LOGFONT *lpelf, TEXTMETRIC *lpntm, DWORD FontType, lPARAM lParam)

这些参数都是对枚举字体的具体描述

 

#include <windows.h>     #include <aygshell.h> #include "resource.h" #include "helloworld.h"     LRESULT CALLBACK MainWndProc (HWND, UINT, WPARAM, LPARAM);   int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,                     LPWSTR lpCmdLine, int nCmdShow) {     WNDCLASS wc;     HWND hWnd;     MSG msg;       // Register application main window class.     wc.style = 0;                             // Window style     wc.lpfnWndProc = MainWndProc;             // Callback function     wc.cbClsExtra = 0;                        // Extra class data     wc.cbWndExtra = 0;                        // Extra window data     wc.hInstance = hInstance;                 // Owner handle     wc.hIcon = NULL,                          // Application icon     wc.hCursor = LoadCursor (NULL, IDC_ARROW);// Default cursor     wc.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);     wc.lpszMenuName =  NULL;                  // Menu name     wc.lpszClassName = TEXT("MyClass");       // Window class name       if (RegisterClass (&wc) == 0) return -1;       // Create main window.     hWnd = CreateWindowEx(WS_EX_NODRAG,//WS_EX_NODRAG | WS_EX_CAPTIONOKBTN, // Ex style flags                           TEXT("MyClass"),    // Window class                           TEXT("Hello"),      // Window title                           // Style flags                           //WS_VISIBLE | WS_CAPTION | WS_SYSMENU,                               WS_VISIBLE,                           CW_USEDEFAULT,      // x position                           CW_USEDEFAULT,      // y position                           CW_USEDEFAULT,      // Initial width                           CW_USEDEFAULT,      // Initial height                           NULL,               // Parent                           NULL,               // Menu, must be null                           hInstance,          // Application instance                           NULL);              // Pointer to create                                               // parameters     if (!IsWindow (hWnd)) return -2;  // Fail code if not created.       // Standard show and update calls     ShowWindow (hWnd, nCmdShow);     UpdateWindow (hWnd);       // Application message loop     while (GetMessage (&msg, NULL, 0, 0)) {         TranslateMessage (&msg);         DispatchMessage (&msg);     }     // Instance cleanup     return msg.wParam;}     int CALLBACK PaintSingleFontFamily (CONST LOGFONT *lplf,                                     CONST TEXTMETRIC *lpntm,                                     DWORD nFontType, LPARAM lParam) {     HDC hdc;     HFONT hFont, hOldFont;       hdc = (HDC) lParam;                                                   // Create the font from the LOGFONT structure passed.     hFont = CreateFontIndirect (lplf);       // Select the font into the device context.     hOldFont = (HFONT)SelectObject (hdc, hFont);        ExtTextOut (hdc, 50, 100, 0, NULL,TEXT ("Hello World!"), lstrlen(TEXT ("Hello World!")), NULL);         // Deselect font and delete.     SelectObject (hdc, hOldFont);     DeleteObject (hFont);        ExtTextOut (hdc, 50, 150, 0, NULL,TEXT ("Hello World!"), lstrlen(TEXT ("Hello World!")), NULL);     return 1; }   void SetLogFont(LOGFONT *myfont) {      myfont->lfHeight = 24;//37;      myfont->lfWidth = 0;//15;      myfont->lfEscapement = 0;      myfont->lfOrientation = 0;      myfont->lfWeight = 400;      myfont->lfItalic = 0;      myfont->lfUnderline = 0;      myfont->lfStrikeOut = 0;      myfont->lfCharSet = 0;      myfont->lfOutPrecision = 0;      myfont->lfClipPrecision = 2;      myfont->lfQuality = 1;      myfont->lfPitchAndFamily = 34;      memset(myfont->lfFaceName, 0, sizeof(myfont->lfFaceName));      lstrcpy(myfont->lfFaceName,TEXT("Trebuchet MS"));   }   LRESULT CALLBACK MainWndProc (HWND hWnd, UINT wMsg, WPARAM wParam,                               LPARAM lParam) {     PAINTSTRUCT ps;     RECT rect,rc;     HDC hdc;      HBRUSH hbrOld;      LOGFONT lplf;      HFONT hFont, hOldFont;       switch (wMsg) {        case WM_PAINT:             // Get the size of the client rectangle         GetClientRect (hWnd, &rect);           hdc = BeginPaint (hWnd, &ps);                     //Set black          hbrOld = (HBRUSH)SelectObject (hdc, GetStockObject (BLACK_BRUSH));          Rectangle (hdc, rect.left, rect.top, rect.right, rect.bottom);          SelectObject (hdc, hbrOld);                   SetBkColor (hdc, RGB(0,0,0));          SetTextColor (hdc, RGB(255,255,255));        // DrawText (hdc, TEXT ("Hello World!"), -1, &rect,DT_CENTER | DT_VCENTER | DT_SINGLELINE);                   //Set Full Screen           SHFullScreen(hWnd, SHFS_HIDETASKBAR | SHFS_HIDESIPBUTTON | SHFS_HIDESTARTICON);                   SetRect(&rc, 0, 0, GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN));              MoveWindow( hWnd,rc.left, rc.top,rc.right, rc.bottom,FALSE);          //       SystemParametersInfo(SPI_GETWORKAREA, 0, &rc, FALSE); //      MoveWindow(hWnd, rc.left, rc.top, rc.right, rc.bottom, TRUE);                    ExtTextOut (hdc, 5, 50, 0, NULL,TEXT ("g Hello World!"), lstrlen(TEXT ("g Hello World!")), NULL); //       EnumFontFamilies ((HDC)hdc, TEXT("Trebuchet MS"),PaintSingleFontFamily,(LPARAM)hdc);              SetLogFont(&lplf);          hFont = CreateFontIndirect (&lplf);            // Select the font into the device context.          hOldFont = (HFONT)SelectObject (hdc, hFont);            ExtTextOut (hdc, 5, 80, 0, NULL,TEXT ("g Hello World!"), lstrlen(TEXT ("g Hello World!")), NULL);            // Deselect font and delete.          SelectObject (hdc, hOldFont);          DeleteObject (hFont);            EndPaint (hWnd, &ps);         return 0;  //   case WM_CANCELMODE: //   case WM_CLOSE:      case WM_DESTROY:         PostQuitMessage (0);         break;     }     return DefWindowProc (hWnd, wMsg, wParam, lParam); }