Inno Setup的運行時錯誤：「」不是有效的整數值

Question

我有以下代碼：

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

和我，當我運行安裝程序上述錯誤。 {reg：HKLM \ SomeKey，SomeValue}上面是一個雙字值。我怎樣才能解決這個問題？

Answer 1

對於REG_SZ或REG_EXPAND_SZ以外的值類型，您不能使用{reg:...}常數。這是相當隱藏在DefaultValue參數說明（由我強調）：

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).

對你來說意味着你必須停止使用{reg:...}常數REG_DWORD值類型的註冊表項。但是，您仍然可以編寫{code:...}腳本函數，該函數將返回註冊表項值：

[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;