有一段代码
function GetEnChar(cnchar: string): char;
begin
case Word(cnchar[1]) shl 8 + Word(cnchar[2]) of
$B0A1..$B0C4: result := 'a';
$B0C5..$B2C0: result := 'b';
$B2C1..$B4ED: result := 'c';
$B4EE..$B6E9: result := 'd';
$B6EA..$B7A1: result := 'e';
$B7A2..$B8C0: result := 'f';
$B8C1..$B9FD: result := 'g';
$B9FE..$BBF6: result := 'h';
$BBF7..$BFA5: result := 'j';
$BFA6..$C0AB: result := 'k';
$C0AC..$C2E7: result := 'l';
$C2E8..$C4C2: result := 'm';
$C4C3..$C5B5: result := 'n';
$C5B6..$C5BD: result := 'o';
$C5BE..$C6D9: result := 'p';
$C6DA..$C8BA: result := 'q';
$C8BB..$C8F5: result := 'r';
$C8F6..$CBF9: result := 's';
$CBFA..$CDD9: result := 't';
$CDDA..$CEF3: result := 'w';
$CEF4..$D188: result := 'x';
$D1B9..$D4D0: result := 'y';
$D4D1..$D7F9: result := 'z';
else
result := char(0);
end;
end;
其中不明白这句的函数:
case Word(cnchar[1]) shl 8 + Word(cnchar[2]) of还有
result := char(0);
char函数的意思不要好意思,如果问的太菜的话,请不要见笑!
我查了很久都没有查到,希望各位给个解答!谢谢!
function GetEnChar(cnchar: string): char;
begin
case Word(cnchar[1]) shl 8 + Word(cnchar[2]) of
$B0A1..$B0C4: result := 'a';
$B0C5..$B2C0: result := 'b';
$B2C1..$B4ED: result := 'c';
$B4EE..$B6E9: result := 'd';
$B6EA..$B7A1: result := 'e';
$B7A2..$B8C0: result := 'f';
$B8C1..$B9FD: result := 'g';
$B9FE..$BBF6: result := 'h';
$BBF7..$BFA5: result := 'j';
$BFA6..$C0AB: result := 'k';
$C0AC..$C2E7: result := 'l';
$C2E8..$C4C2: result := 'm';
$C4C3..$C5B5: result := 'n';
$C5B6..$C5BD: result := 'o';
$C5BE..$C6D9: result := 'p';
$C6DA..$C8BA: result := 'q';
$C8BB..$C8F5: result := 'r';
$C8F6..$CBF9: result := 's';
$CBFA..$CDD9: result := 't';
$CDDA..$CEF3: result := 'w';
$CEF4..$D188: result := 'x';
$D1B9..$D4D0: result := 'y';
$D4D1..$D7F9: result := 'z';
else
result := char(0);
end;
end;
其中不明白这句的函数:
case Word(cnchar[1]) shl 8 + Word(cnchar[2]) of还有
result := char(0);
char函数的意思不要好意思,如果问的太菜的话,请不要见笑!
我查了很久都没有查到,希望各位给个解答!谢谢!
Word()
强制类型转换,参见online help或者delphi技术手册 data type一节shl左移位操作
平时你遇到难题或不懂的东西的时候,你去那里查呢?你还使用那些参考书呢?