Question

是否存在NSIS插件或内置功能，以异步方式下载文件并使用下载进度更新自定义进度条（使用nsDialogs创建）？

Answer 1

您可以使用INetBgDl plugin在后台下载文件并设计自己的用户界面：

!include nsDialogs.nsh
!include LogicLib.nsh
Var hInfo
Var hPBar

Function myTimer
InetBgDL::GetStats
${If} $2 = 0
    ${NSD_KillTimer} myTimer
    ${NSD_SetText} $hInfo "Completed. (Status=$0)"
    SendMessage $hPBar ${PBM_SETRANGE32} 0 100
    SendMessage $hPBar ${PBM_SETPOS} 100 0
    Return
${EndIf}
IntOp $2 $2 + $1
StrCmp $4 "" 0 +2
StrCpy $4 "?"
${NSD_SetText} $hInfo "Status=$0$\nCompleted $1 of $2 files$\nDownloaded $3 of $4 bytes"
SendMessage $hPBar ${PBM_SETRANGE32} 0 $4
SendMessage $hPBar ${PBM_SETPOS} $3 0
FunctionEnd

Function myPage
nsDialogs::Create 1018
Pop $0

${NSD_CreateLabel} 0 0 100% 50% "Starting download..."
Pop $hInfo

${NSD_CreateProgressBar} 0 55% 100% 10u ""
Pop $hPBar

${NSD_CreateTimer} myTimer 1000
InetBgDL::Get /RESET "https://download.mozilla.org/?product=firefox-41.0.2-SSL&os=win&lang=en-US" "$PluginsDir\ff.exe" /END

nsDialogs::show
${NSD_KillTimer} myTimer
FunctionEnd

Page Custom myPage
Page InstFiles

NSIS异步文件下载和自定义进度条

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