在延迟的自定义操作中获取CustomActionData [英] Getting CustomActionData in deferred custom action

问题描述

我尝试从c ++ dll中的CustomActionData属性获取数据，但是在延迟序列中它始终为空。如果我在UI序列中执行的CA中使用完全相同的代码，那么一切都很好。

I try to get data from the CustomActionData property in a c++ dll, but it's always empty during the deferred sequence. If I use the exact same code in a CA executed during the UI sequence it all works great.

        UINT iCASize = 0;
        UINT uiStat = MsiGetProperty(hInstall, TEXT("CustomActionData"), TEXT(""), &iCASize);
        if (uiStat == ERROR_MORE_DATA)
        {
            // this means there are data to read. Allocate array for all data and read it (+1 for null termination)
            pCustData = new WCHAR[iCASize + 1];
            uiStat = MsiGetProperty(hInstall, TEXT("CustomActionData"), pCustData, &iCASize);
        }

你们中的任何人都知道有什么问题吗？

Any of you out there have an idea what could be wrong?

推荐答案

此C ++代码存在问题（我已经二十年没有使用c ++了），或者更有可能您未设置CustomActionData正确。

Either there is something wrong with this C++ code (I haven't done c++ in twenty years) or more likely you not setting the CustomActionData correctly.

您需要先执行在立即上下文中安排的自定义操作，然后再执行延迟的自定义操作。

You need to a custom action scheduled in the immediate context before your deferred custom action. The property it sets is the name of the deferred CA.

Customaction名称：SetSomething属性：Something =值：FOO（不是CustomActionData = FOO）

Customaction Name: SetSomething Property: Something = Value: FOO ( Not CustomActionData = FOO )

自定义名称：Something MsiGetProperty（... CustomactionData ...）;

Customaction Name: Something MsiGetProperty( ... "CustomactionData" ... );

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