用INI实现多语言界面的切换

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对于INI文件的操作,我不多说了,仅仅就如何实现语言界面的切换做一个简单的说明:
首先,必须把所有的INI语言文件的结构统一,这样,我们只要传入INI的文件名,就可以通用了,例如我们可以做一个过程SetLanguage(const FileName:string);,这样只要用SetLanguage('CN.INI')就可以了,第二个需要注意的地方,你应该可以让用户选择语言界面的文件,因此程序启动的时候,应该搜索程序目录下面的所有INI文件,当然,你可以在INI文件里面添加一些附加的东西,例如,判断是否是语言INI文件还是其他的配置文件,显示的文字等等~~~~~,如果你的程序中还使用了类似ShowMessage('File Saved!')之类的语句,那么也应该用变量代替!!!例如:ShowMessage(MSG_FILE_SAVED);然后读取INI的时候,一起读入MSG_FILE_SAVED,这样才能保证所有的信息全部变成相应的语言!如果对于这些嵌入程序的信息你怕一个个很麻烦的话, 可以用数组来做~~~~~~~~~:)。接下来就是翻译文字了,这个就~~~~~~~~免了吧?最重要的一步到了:切换语言!我以前的方法是自己写一个过程,用Lable1.Caption:=Ini.ReadString(....)之类的,$^*$#@&^@*(^@(^$@^,现在想起来,怎么这么弱?:(,真的很笨,嗯咳~~~~~~不许笑,:),这个方法有一个缺点就是如果你添加一个控件就^$#@&*^%@&*了~~~~~~~~~,所以必须找一个更好的方法!看看下面的函数就知道了:
procedure SetLanguage(const FileName:string);
使用这个方法对于大多数的情况已经够了,但是有一个不方便的地方是如果动态创建窗体或者控件的话,就不行了~~~~~:(,不过你可以根据你的需要,可以修改上面的过程,然后在每一个窗体的OnCreate中添加代码就可以了,例如你把上面的过程改成对单个窗体的,就可以了:)。如果还有考虑不到的控件,你自己添加好了~~:),对于一些小程序来说,下面的已经够了:
{****************************************
* 模块说明:利用切换INI切换语言函数*
* 作者:Kingron@163.net *
****************************************}
{****************************************
下面的编译指定表示是否导出成一个INI文件
一般的情况下面,没有必要修改,但需要母本
INI的时候,可以把注释去掉
****************************************}
{$IFNDEF INI_EXPORT}
///{$DEFINE INI_EXPORT}
{$ENDIF}
{****************************************
函数参数说明:
FileName:Ini语言文件名
msg:用于程序中的信息的保存数组
IgnoreTagValue:需要忽略的组件的Tag值
使用举例:
var
Msg:array of string;
.....
SetLanguage(ExtractFilePath(ParamStr(0))+'English.Ini',msg,$FF);
那么函数会忽略所有Tag值为$FF的控件
****************************************}
procedure SetLanguage(const FileName: string; var msg: array of string; const IgnoreTagValue: byte = $FF);
const
///下面是一些常量
TRANS_SECTION = 'Translations';
MESSAGES = 'Messages';
COMMON = 'Common';
HINT = 'Hint';
CAPTION = 'Caption';
MSG_PRE = 'SS_Msg_';
var
i, j, k : integer;
Component : TComponent;
Control : TControl;
Strings : TStrings;
Id : string;
OldCaption : pchar;
L : integer;
begin
with TIniFile.Create(FileName) do
try
{$IFDEF INI_EXPORT}
if Application.Title<>'' then WriteString(COMMON, 'Application.Title', Application.Title);
WriteBool(COMMON, 'CheckValid', True);
{$ELSE}
if not ReadBool(COMMON, 'CheckValid', False) then exit; ///不是合法的语言文件
Application.Title := ReadString(COMMON, 'Application.Title', Application.Title);
{$ENDIF}
for i := Low(msg) to High(msg) do ///读取非控件的一些语言元素
{$IFDEF INI_EXPORT}
if Msg<>'' then
WriteString(MESSAGES, MSG_PRE + IntToStr(i), msg);
{$ELSE}
msg := ReadString(MESSAGES, MSG_PRE + IntToStr(i), msg);
{$ENDIF}
for i := 0 to Screen.FormCount - 1 do ///遍历程序所有窗体
begin
{$IFDEF INI_EXPORT}
if Screen.Forms.Caption<>'' then
WriteString(TRANS_SECTION, Screen.Forms.Name + '.' + CAPTION, Screen.Forms.Caption);
if Screen.Forms.Hint<>'' then
WriteString(TRANS_SECTION, Screen.Forms.Name + '.' + HINT, Screen.Forms.Hint);
{$ELSE}
Screen.Forms.Caption := ReadString(TRANS_SECTION, Screen.Forms.Name + '.' + CAPTION, Screen.Forms.Caption);
Screen.Forms.Hint := ReadString(TRANS_SECTION, Screen.Forms.Name + '.' + HINT, Screen.Forms.Hint);
{$ENDIF}
for j := 0 to Screen.Forms.ComponentCount - 1 do ///遍历窗体所有组件
begin
Component := Screen.Forms.Components[j] as TComponent;
if Component.Tag = IgnoreTagValue then Continue; ///需要忽略的控件
Id := Screen.Forms.Name + '.' + Component.Name + '.';
if Component is TControl then ///普通的控件如:TButton,TSpeedButton,TBitBtn,TCheckBox....
begin
Control := Component as TControl;
/// 下面的代码是用来生成第一个INI文件使用的
{$IFDEF INI_EXPORT}
if Control.Hint<>'' then
WriteString(TRANS_SECTION, Id + HINT, Control.Hint);
{$ELSE}
Control.Hint := ReadString(TRANS_SECTION, Id + HINT, Control.Hint);
{$ENDIF}
if Control is TCustomEdit then Continue; ///忽略TMemo,TEdit之类的
if (Component is TCustomListBox) or (Component is TCustomRadioGroup)
or (Component is TCustomComboBox) then /// Listbox,RadioGroup,Combobox必须单独处理
begin
Strings := nil; ///本行用于忽略编译信息
if Component is TCustomListBox then Strings := TCustomListBox(Component).Items;
if Component is TCustomRadioGroup then Strings := TRadioGroup(Component).Items;
if Component is TCustomComboBox then Strings := TCustomComboBox(Component).Items;
for k := 0 to Strings.Count - 1 do ///遍历Items的每一项
{$IFDEF INI_EXPORT}
WriteString(TRANS_SECTION, ID + 'Items.' + IntToStr(k), Strings.Strings[k]);
{$ELSE}
Strings.Strings[k] := ReadString(TRANS_SECTION, ID + 'Items.' + IntToStr(k), Strings.Strings[k]);
{$ENDIF}
end;
if Component is TCustomComboBox then Continue; ///Combobox还有一点儿问题,:-(
L := Control.GetTextLen + 1;
GetMem(OldCaption, L);
Control.GetTextBuf(OldCaption, L);
{$IFDEF INI_EXPORT}
if StrPas(OldCaption)<>'' then
WriteString(TRANS_SECTION, Id + CAPTION, OldCaption);
{$ELSE}
Control.SetTextBuf(pchar(ReadString(TRANS_SECTION, Id + CAPTION, OldCaption)));
{$ENDIF}
FreeMem(OldCaption, L);
continue;
end;
if Component is TMenuItem then /// 处理TMenuItem
begin
{$IFDEF INI_EXPORT}
if (TMenuItem(Component).Caption<>'') and (TMenuItem(Component).Caption <>'-') then
WriteString(TRANS_SECTION, Id + CAPTION, TMenuItem(Component).Caption);
if TMenuItem(Component).Hint<>'' then
WriteString(TRANS_SECTION, Id + HINT, TMenuItem(Component).Hint);
{$ELSE}
TMenuItem(Component).Caption := ReadString(TRANS_SECTION, ID + CAPTION, TMenuItem(Component).Caption);
TMenuItem(Component).Hint := ReadString(TRANS_SECTION, ID + HINT, TMenuItem(Component).Hint);
{$ENDIF}
Continue;
end;
if Component is TCustomAction then /// 处理TAction
begin
{$IFDEF INI_EXPORT}
if TCustomAction(Component).Caption<>'' then
WriteString(TRANS_SECTION, Id + CAPTION, TCustomAction(Component).Caption);
if TCustomAction(Component).Hint<>'' then
WriteString(TRANS_SECTION, Id + HINT, TCustomAction(Component).Hint);
{$ELSE}
TCustomAction(Component).Caption := ReadString(TRANS_SECTION, CAPTION, TCustomAction(Component).Caption);
TCustomAction(Component).Hint := ReadString(TRANS_SECTION, ID + HINT, TCustomAction(Component).Hint);
{$ENDIF}
Continue;
end;
if Component is TOpenDialog then ///处理TOpenDialog,TSaveDialog,....
begin
{$IFDEF INI_EXPORT}
if TOpenDialog(Component).Filter<>'' then
WriteString(TRANS_SECTION, Id + 'Filter', TOpenDialog(Component).Filter);
if TOpenDialog(Component).Title<>'' then
WriteString(TRANS_SECTION, Id + 'Title', TOpenDialog(Component).Title);
{$ELSE}
TOpenDialog(Component).Filter := ReadString(TRANS_SECTION, ID + HINT, TOpenDialog(Component).Filter);
TOpenDialog(Component).Title := ReadString(TRANS_SECTION, CAPTION, TOpenDialog(Component).Title);
{$ENDIF}
end;
end;
end;
finally
Free;
end;
end;
 
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