c - How can I flexibly change an font's size in X window using XFontStruct

Question

I have a program based on X11 window, using C & Motif, for some reason I want to change the font-size displayed on the interface, just as the text editor, which can change the font-size by choosing the specific number to realize.

But here I occurred this difficulty, in X11 lib, the method of using system font in the program is calling XLoadFont to load the specific font to the XFontSruct, and the parameters must be the font name that can be queried by "xlsfonts"

which means I can not change the font size flexibly, the font I am using now is

-bitstram-bitstram vera sans mono-medium-r-normal--0-0-0-0-m-0-isi8859-15

How can I probably change the font-size of this font flexibly in my program?

question from:https://stackoverflow.com/questions/65933979/how-can-i-flexibly-change-an-fonts-size-in-x-window-using-xfontstruct

Answer 1

Waitting for answers