addfont

RemoveFontResource(L"C:\\Windows\\Fonts\\simfang.ttf");
AddFontResource(L"C:\\Windows\\Fonts\\simfang.ttf");

int r = AddFontResource(TEXT("C:\\WINDOWS\\FONTS\\simfang.ttf"));
PostMessage(HWND_BROADCAST, WM_FONTCHANGE, NULL, NULL);
SendMessage(HWND_BROADCAST, WM_FONTCHANGE, NULL, NULL);

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// flush.cpp : 定义控制台应用程序的入口点。
//
 
#include "stdafx.h"
#include <stdio.h>
#include <Windows.h>
#include <iostream>
#include <fstream>
#include <vector>
#include <stdlib.h>
#include <string>
using namespace std;
 
int initLogFont( LOGFONT& lf ,const wchar_t * familyName, int fontSize ) {
  
    lf.lfHeight = fontSize;
    lf.lfWidth = 0;
    lf.lfEscapement = 0;
    lf.lfOrientation = 0;
    lf.lfWeight = 0;
    lf.lfItalic = 0;
    lf.lfUnderline = 0;
    lf.lfStrikeOut = 0;
    lf.lfCharSet = 1;
    lf.lfOutPrecision = 0;
    lf.lfClipPrecision = 0;
    lf.lfQuality = 0;
    lf.lfPitchAndFamily = 0;
    wcscpy( lf.lfFaceName, familyName );
    return 0;
}
 
 
void loadBinaryFile( std::vector<char>& vec, std::string filePath ){
    std::ifstream file( filePath, std::ifstream::binary );
    if( !file.eof() && !file.fail() ) {
        file.seekg( 0, std::ios_base::end );
        std::streampos fileSize = file.tellg();
        vec.resize( fileSize );
 
        file.seekg( 0, std::ios_base::beg );
        file.read( &vec[0], fileSize );
    }
}
  
int _tmain(int argc, _TCHAR* argv[])
{
 
    std::vector<char> fontData;
    loadBinaryFile( fontData, "C:\\Windows\\Fonts\\simfang.ttf");
 
    //Add font to the system (so 'CreateFontIndirect' is aware of the font)
    DWORD count = 0;
    HANDLE fontHandle = AddFontMemResourceEx( ( void * )fontData.data(), fontData.size(), 0,
        &count );
 
    if( !fontHandle ) {
        std::cout << "Failed 'AddFontMemResourceEx' operation" << std::endl;
        return 0;
    }
 
    LOGFONT lf;
    initLogFont( lf, L"FangSong",  10000000 );
 
    //ask windows for font
    HFONT hfont = CreateFontIndirect( &lf );
    if( !hfont ) {
        std::cout << "Failed 'CreateFontIndirect' operation" << std::endl;
        return 0;
    }
    //initialise DC
    HDC displayDC = GetDC( 0 );
    HDC hdc = CreateCompatibleDC( displayDC );
    HGDIOBJ oldobj = SelectObject( hdc, hfont );
 
    //ask DC for metrics
    TEXTMETRIC textMetrics;
    bool res = GetTextMetrics( hdc, &textMetrics );
 
    if( !res ) {
        std::cout << "Failed 'GetTextMetrics' operation" << std::endl;
        return 0;
    }
    std::cout << "textMetrics.tmHeight : " << textMetrics.tmHeight << std::endl;
    std::cout << "textMetrics.tmDescent : " << textMetrics.tmDescent << std::endl;
    std::cout << "textMetrics.tmAscent : " << textMetrics.tmAscent << std::endl;
    system("PAUSE");
    return 0;
}