query_fontT_query_fontQueryFontQueryFontquery_font (算子名称)

名称

query_fontT_query_fontQueryFontQueryFontquery_font — Query the available fonts.

参数签名

query_font( : : WindowHandle : Font)

描述

query_fontquery_fontQueryFontQueryFontQueryFontquery_font queries the fonts available for text output in the output window. They can be set with the operator set_fontset_fontSetFontSetFontSetFontset_font using the appropriate syntax. Fonts are used by the operators write_stringwrite_stringWriteStringWriteStringWriteStringwrite_string, read_charread_charReadCharReadCharReadCharread_char, read_stringread_stringReadStringReadStringReadStringread_string and new_linenew_lineNewLineNewLineNewLinenew_line.

注意

For different machines the available fonts may differ a lot. Therefore query_fontquery_fontQueryFontQueryFontQueryFontquery_font will return different fonts on different machines.

运行信息

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Processed without parallelization.

参数表

WindowHandleWindowHandleWindowHandleWindowHandlewindowHandlewindow_handle (input_control) window → (handle)

Window handle.

FontFontFontFontfontfont (output_control) string-array → (string)

Tuple with available font names.

例程 (HDevelop)

open_window(0,0,-1,-1,'root','visible','',WindowHandle)
set_check('~text')
query_font(WindowHandle,Fontlist)
set_color(WindowHandle,'white')
for i:=0 to |Fontlist|-1 by 1
  set_display_font (WindowHandle,16,Fontlist[i],'true','false')
  write_string(WindowHandle,Fontlist[i])
  new_line(WindowHandle)
endfor

结果

query_fontquery_fontQueryFontQueryFontQueryFontquery_font returns 2 ( H_MSG_TRUE) .

可能的前置算子

open_windowopen_windowOpenWindowOpenWindowOpenWindowopen_window

可能的后置算子

set_fontset_fontSetFontSetFontSetFontset_font, write_stringwrite_stringWriteStringWriteStringWriteStringwrite_string, read_stringread_stringReadStringReadStringReadStringread_string, read_charread_charReadCharReadCharReadCharread_char

参考其它

模块

Foundation

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