RE: Install font from ClickOnce application

Hi Thomas,

Thanks for the feedback.

Actually, ClickOnce is only a deployment technology, it does not offer any
support for font installation currently, since this operation requires
extra coding. We have to code the font installation logic in the
application. So this question is not a ClickOnce specific.

Based on my test using the code snippet below, after I called InstallFont,
the Word application can use the font without any problem, so I think it
should work for Excel application. But without restarting the application,
the .Net winform application still can not use it. , do you get different
result? My testing machine is Win2003 SP1.

private void button1_Click(object sender, EventArgs e)
{
InstallFont();
}

internal static void InstallFont()
{

string fontsPath = GetFontsPath();
string ttfFile = System.IO.Path.Combine(fontsPath, "cookiehollow.ttf");
System.IO.File.Copy(@"C:\cookiehollow.ttf", ttfFile);
int ret;

if (System.IO.File.Exists(ttfFile))
{
//Add font resource
ret = AddFontResource(ttfFile);
//Add registry entry so the font is also available next session
Registry.SetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Fonts",
"Cookie Hollow Regular (TrueType)", "cookiehollow.ttf",
RegistryValueKind.String);
//Broadcast to let all top-level windows know about change
ret = SendMessage(HWND_BROADCAST, WM_FONTCHANGE, new IntPtr(0), new
IntPtr(0));
}
}

// PInvoke to look up fonts path
[System.Runtime.InteropServices.DllImport("shfolder.dll", CharSet =
System.Runtime.InteropServices.CharSet.Auto)]
private static extern int SHGetFolderPath(IntPtr hwndOwner, int nFolder,
IntPtr hToken, int dwFlags, StringBuilder lpszPath);
private const int CSIDL_FONTS = 0x0014;
private const int MAX_PATH = 260;
private static string GetFontsPath()
{
StringBuilder sb = new StringBuilder(MAX_PATH);
SHGetFolderPath(IntPtr.Zero, CSIDL_FONTS, IntPtr.Zero, 0, sb);
return sb.ToString();
}

// PInvoke to 'register' fonts and broadcast addition
[System.Runtime.InteropServices.DllImport("gdi32.dll")]
private static extern int AddFontResource(string lpszFilename);
[System.Runtime.InteropServices.DllImport("gdi32.dll")]
private static extern int CreateScalableFontResource(uint fdwHidden, string
lpszFontRes, string lpszFontFile, string lpszCurrentPath);
private static IntPtr HWND_BROADCAST = new IntPtr(0xffff);
private const uint WM_FONTCHANGE = 0x001D;
[System.Runtime.InteropServices.DllImport("user32.dll", CharSet
=System.Runtime.InteropServices.CharSet.Auto)]
private static extern int SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam,
IntPtr lParam);

private void button2_Click(object sender, EventArgs e)
{
this.button2.Font = new Font("CookieHollow", 10, FontStyle.Regular);
}

Thanks.

Best regards,
Jeffrey Tan
Microsoft Online Community Support
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