Question

我正在安装一个视频演播室项目安装器,使用无装置。我正在犯错误。

"Parameter ValueData has invalid value"

该守则:

[Code]
function GetVersion(AppVersion: String): String;
var
  Version: String;
  CharIndex: integer;
  c: char;
begin  
for CharIndex := 1 to Length(AppVersion) do begin
    c := AppVersion[CharIndex];
    if (c <>  . ) then
    Version := Version + c;
end;
Result := Version;
end;

[Registry]
Root: HKCU; Subkey: "MyCompanyProduct"; ValueType: DWORD ; ValueName: "Version" ;     ValueData: GetVersion({#MyAppVersion}); Flags: uninsdeletekey;

我的版本就是“1.0.0.3, 1.0.0.4,等等”。因此,这项方案删除了......,并召集了所有方案组成一个编号,并应当转回登记处。因此,我可以检查这一登记价值,不停或更新前版本。我听到有人说,诺言会自动升级,但我用字号制作漫画。提前感谢。

Answer 1

The problem you are seeing is because to call a function as a parameter in the main sections of InnoSetup, you need to use the {code:} construct.
Here s an example that worked for me:

[Registry]
Root: HKCU; Subkey: "SoftwareMyCompanyProduct"; ValueType: DWORD ; ValueName: "Version" ;     ValueData: {code:GetVersion|{#MyAppVersion}}; Flags: uninsdeletekey;

Answer 2

As @Ken White said, your constant is "broken" which makes the entire string literal invalid. Even then, you ValueData is still just GetVersion(WhateverMyAppVersionIs) instead if the result of that function. For that, use a {code:} constant to call GetVersion.

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