InnoSetup MsiQueryProductState

发布于 2024-12-08 18:22:55 字数 842 浏览 1 评论 0原文

我想用 Inno 安装程序替换 VS 安装程序。请检查是否安装了旧版本，我发现了“MsiQueryProductState”方法。我发现了几个如下所示的示例：

function MsiQueryProductState(ProductCode: string): integer;
  external '[email protected] stdcall';
function MsiConfigureProduct(ProductCode: string;
  iInstallLevel: integer; eInstallState: integer): integer;
  external '[email protected] stdcall';
const
  INSTALLSTATE_DEFAULT = 5;
  INSTALLLEVEL_MAXIMUM = $ffff;
  INSTALLSTATE_ABSENT = 2;

检查产品总是返回 2 而不是所需的 5 值 (INSTALLSTATE_DEFAULT)

我发现了错误，我会将其发布为答案...

谢谢 Freddy

原文

I want to replace the VS setup by the Inno Setup. Do check if an old version is installed i found the 'MsiQueryProductState' method.
I found several examples looking like this:

function MsiQueryProductState(ProductCode: string): integer;
  external '[email protected] stdcall';
function MsiConfigureProduct(ProductCode: string;
  iInstallLevel: integer; eInstallState: integer): integer;
  external '[email protected] stdcall';
const
  INSTALLSTATE_DEFAULT = 5;
  INSTALLLEVEL_MAXIMUM = $ffff;
  INSTALLSTATE_ABSENT = 2;

Checking for the product always returned 2 and not the required 5 value (INSTALLSTATE_DEFAULT)

I found the mistake, I'll post it as an answer ...

Thank Freddy

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孤独难免 2024-12-15 18:22:55

问题是 InnoSetup 的 Unicode 版本与函数原型的 ANSI 版本混合在一起。将 MsiQueryProductStateA 替换为 MsiQueryProductStateW 就足够了。

如果您使用这个有条件定义的脚本，InnoSetup 编译预处理器将找到函数的正确版本（Unicode 或 ANSI），具体取决于您何时使用 ANSI 或 Unicode InnoSetup。

[Code]
#IFDEF UNICODE
  #DEFINE AW "W"
#ELSE
  #DEFINE AW "A"
#ENDIF

function MsiQueryProductState(ProductCode: string): integer;
  external 'MsiQueryProductState{#AW}@msi.dll stdcall';
function MsiConfigureProduct(ProductCode: string;
  iInstallLevel: integer; eInstallState: integer): integer;
  external 'MsiConfigureProduct{#AW}@msi.dll stdcall';

The problem was the Unicode version of the InnoSetup mixed with the ANSI version of function prototype. It was enough to replace the MsiQueryProductStateA with MsiQueryProductStateW.

If you use this conditionally defined script, InnoSetup compilation preprocessor will find the right version for the functions (Unicode or ANSI) depending on when you're using ANSI or Unicode InnoSetup.

[Code]
#IFDEF UNICODE
  #DEFINE AW "W"
#ELSE
  #DEFINE AW "A"
#ENDIF

function MsiQueryProductState(ProductCode: string): integer;
  external 'MsiQueryProductState{#AW}@msi.dll stdcall';
function MsiConfigureProduct(ProductCode: string;
  iInstallLevel: integer; eInstallState: integer): integer;
  external 'MsiConfigureProduct{#AW}@msi.dll stdcall';

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