从安装程序中提取isxdl.dll需要很长时间

Question

I'm using InnoSetup to create an installer for my WPF application. My application is about ~300Mo. I've implemented this method to check if the client environment has MS Framework 4.0: http://www.codeproject.com/Articles/20868/NET-Framework-1-1-2-0-3-5-Installer-for-InnoSetup This method uses the isxdl.dll.

When I start the installer, it stuck 10 seconds on this task (in InnoSetup debug mode):

Extracting temporary file: C:\Users\Ben\AppData\Local\Temp\is-IKJ7C.tmp\isxdl.dll

This DLL is about 122Ko, that's light. I've tried to create the same installer (using the same scripts) with a lighter application (about 5Mo), and the installer works well (no more stuck time).

I do not know how it is possible that the application files (the weight of the application) affect the loading of this dll.

Answer 1

All files that are going to be used by Install Script for actions & functions should be placed at the beginning of [Files] section especially when using SolidCompression=True . It's also good option to use Flags: nocompression dontcopy for them.

[Files]
Source: ".\ISWin7.dll"; DestDir: "{tmp}"; Flags: dontcopy nocompression
Source: ".\games\{#BMPDir}\BMP\*"; DestDir: "{tmp}"; Flags: dontcopy nocompression
Source: ".\InnoCallback.dll"; DestDir: "{tmp}"; Flags: dontcopy nocompression
Source: ".\MyAppSourceFiles\*"; DestDir: "{app}"; Flags: ignoreversion

The disadvantage to using solid compression is that because all files are compressed into a single compressed stream, Setup can no longer randomly access the files

• that makes it to "unpack all files" before it can access the last one. More info here .