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The AddFontResource function adds the font resource from the specified file to the system font table. The font can subsequently be used for text output by any application.
Remarks
Any application that adds or removes fonts from the system font table should notify other windows of the change by sending a WM_FONTCHANGE message to all top-level windows in the operating system. The application should send this message by calling the SendMessage function and setting the hwnd parameter to HWND_BROADCAST.
When an application no longer needs a font resource that it loaded by calling the AddFontResource function, it must remove that resource by calling the RemoveFontResource function.
This function installs the font only for the current session. When the system restarts, the font will not be present. To have the font installed even after restarting the system, the font must be listed in the registry.
Windows 95/98/Me: AddFontResourceW is supported by the Microsoft Layer for
Unicode. To use this, you must add certain files to your application, as outlined in Microsoft Layer for
Unicode on Windows 95/98/Me Systems.