I need to check for existence of a device before installation

[[email protected]]

I want a Pre-Installation verification that our device is connected before continuing.
If the following not true, pop up a message and exit: wmic path CIM_LogicalDevice where "Caption like 'ATS ESCOPE%'" get /value

Can this be done?

[Ulrich]

I am not familiar with wmic - would you be able to provide a working command which would give out a similar output for something common, e.g. a network card, so I can run some tests?

Ulrich

[[email protected]]

I can write a powershell script to run the following command, if I can run the powershell before setup is allowed to continue.
Basically, I want to make sure then own our device an have it connected before the setup is allowed to run.

If device is true then continue, else popup message alerting them the setup cannot run and exit

C:\Users\jeff>wmic path CIM_LogicalDevice where "Caption like 'ATS ESCOPE%'" get /value


Availability=
Caption=ATS eSCOPE ELITE4
ClassGuid={88bae032-5a81-49f0-bc3d-a4ff138216d6}
CompatibleID={"USB\MS_COMP_WINUSB","USB\Class_FF&a mp;SubClass_F0&Prot_00","USB\Class_FF&SubC lass_F0","USB\Class_FF"}
ConfigManagerErrorCode=0
ConfigManagerUserConfig=FALSE
CreationClassName=Win32_PnPEntity
Description=WinUsb Device
DeviceID=USB\VID_1FC9&PID_81AD\ABCD123456789
ErrorCleared=
ErrorDescription=
HardwareID={"USB\VID_1FC9&PID_81AD&REV_010 0","USB\VID_1FC9&PID_81AD"}
InstallDate=
LastErrorCode=
Manufacturer=WinUsb Device
Name=ATS eSCOPE ELITE4
PNPClass=USBDevice
PNPDeviceID=USB\VID_1FC9&PID_81AD\ABCD12345678 9
PowerManagementCapabilities=
PowerManagementSupported=
Present=TRUE
Service=WINUSB
Status=OK
StatusInfo=
SystemCreationClassName=Win32_ComputerSystem
SystemName=DESKTOP-T25050G

If the device is not connected, this will be the response:

c:\Users\jeff>wmic path CIM_LogicalDevice where "Caption like 'ATS ESCOPE%'" get /value
No Instance(s) Available.

[Ulrich]

Here are two solutions for you. Place this code into your project and see which works better for you:

local sProg = SessionVar.Expand("%SystemFolder%\\wbem\\WMIC.exe");
local sArgs = "PATH CIM_LogicalDevice WHERE \"CAPTION LIKE 'ATS ESCOPE%'\" GET /VALUE";
local sCmd =  sProg .. " " .. sArgs;

SetupData.WriteToLogFile("Info\t" .. sArgs .. "\r\n", true);

-- this will show a window on the screen while WMIC is working
local sOutput = "";
for line in io.popen(sCmd):lines() do
    sOutput = sOutput .. line;
end
Dialog.Message("WMIC (1)", sOutput);

-- this will not show a window on the screen while WMIC is working
local sTempFile = SessionVar.Expand("%TempFolder%\\wmic-output.txt")
sArgs = "/OUTPUT:\"" .. sTempFile .. "\" " .. sArgs;
SetupData.WriteToLogFile("Info\t" .. sArgs .. "\r\n", true);
StatusDlg.Show();
StatusDlg.SetTitle(SessionVar.Expand("%ProductName% Setup"));
StatusDlg.SetMessage("Checking your system");
StatusDlg.SetStatusText("This may take a moment...");
StatusDlg.ShowCancelButton(false);
StatusDlg.ShowProgressMeter(false);
StatusDlg.SetAutoSize(true);
File.Run(sProg, sArgs, "", SW_HIDE, true);
StatusDlg.Hide();
if File.DoesExist(sTempFile) then
    -- WMIC outputs Unicode, which is not directly supported, use my Encoding plugin to load file successfully
    sOutput = Encoding.ReadToString(sTempFile, "unicode", "windows-1252")
    Dialog.Message("WMIC (2)", sOutput);
    File.Delete(sTempFile);
end

In both cases, you would search the contents of sOutput for the necessary/expected string and decide what to do next. But this should give you some ideas.

Ulrich