TeX文書デフォルトフォントをゴシック体にする

デフォルトのフォントをゴシックに設定したら,dvipdfmxで以下のエラーが出た:

 kpathsea: Running mktexpk --mfmode / --bdpi 600 --mag 2+180/600 --dpi 1380 gbm

 The command name is C:\usr\local\bin\mktexpk

 kpathsea: Running mktexmf gbm.mf

 The command name is C:\usr\local\bin\mktexmf
 name = gbm, rootname = gbm, pointsize =
 mktexmf: empty or non-existent rootfile!
 Cannot find gbm.mf .
 I try ps2pk --> gsftopk --> ttf2pk --> hbf2gf.
 Current font seems to be a Japanese one.
 I give up to create a PK font.
 kpathsea: Appending font creation commands to missfont.log.

 ** WARNING ** Could not locate a virtual/physical font for TFM "gbm".
 ** WARNING ** >> There are no valid font mapping entry for this font.
 ** WARNING ** >> Font file name "gbm" was assumed but failed to locate that font
.
 ** ERROR ** Cannot proceed without .vf or "physical" font for PDF output...

 Output file removed.

原因はその命令コードにあった.次のコマンド:

\renewcommand{\kanjifamilydefault}{gt}

ではTeXコンパイルはとおるが,dvipdfmxでは上記のエラーが出る.それを改善するには以下のコマンド:

\renewcommand{\kanjifamilydefault}{\gtdefault}

を使う.