I found in the doc the function : gtk_entry_set_input_purpose() to set the input-method of a gtkentry, but when using it, gcc didn't recognize it, it gives me this error
implicit declaration of function ‘gtk_entry_set_input_purpose’ [-Wimplicit-function-declaration]
undefined reference to `gtk_entry_set_input_purpose'
where is the problem?
i think it was a linking problem , compiled successfully with windows after linking all libs ,