Inno Setup的运行时错误：“”不是有效的整数值

Question

我有以下代码：

Root: HKLM; Subkey: "Software\MyKey"; ValueType: dword; ValueName: "MyValue"; ValueData: "{reg:HKLM\SomeKey,SomeValue}"; Flags: createvalueifdoesntexist; 

和我，当我运行安装程序上述错误。 {reg：HKLM \ SomeKey，SomeValue}上面是一个双字值。我怎样才能解决这个问题？

Answer 1

对于REG_SZ或REG_EXPAND_SZ以外的值类型，您不能使用{reg:...}常数。这是相当隐藏在DefaultValue参数说明（由我强调）：

DefaultValue determines the string to embed if the specified registry value does not exist, or is not a string type (REG_SZ or REG_EXPAND_SZ).

对你来说意味着你必须停止使用{reg:...}常数REG_DWORD值类型的注册表项。但是，您仍然可以编写{code:...}脚本函数，该函数将返回注册表项值：

[Setup] 
AppName=My Program 
AppVersion=1.5 
DefaultDirName={pf}\My Program 

[Registry]                      
Root: HKLM; Subkey: "Software\MyKey"; ValueType: dword; ValueName: "MyValue"; ValueData: "{code:GetMyKeyValue}"; Flags: createvalueifdoesntexist; 

[Code] 
function GetMyKeyValue(Param: string): string; 
var 
    Value: DWORD; 
begin 
    // you should provide here a default integer value that will be used in case the key 
    // value does not exist, otherwise you can end up with a similar error 
    Result := '0'; 
    // query the registry key value and if it's found, return it 
    if RegQueryDWordValue(HKLM, 'SomeKey', 'SomeValue', Value) then 
    Result := IntToStr(Value); 
end;