PowerBuilder

PC/SC List Smart Card Readers (and USB Tokens)

See more SCard Examples

Demonstrates how to list the smart card readers and USB tokens connected to the computer.

Note: This functionality was introduced in Chilkat v9.5.0.87.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Scard
oleobject loo_StReaders
integer li_NumReaders
integer i

li_Success = 0

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

loo_Scard = create oleobject
li_rc = loo_Scard.ConnectToNewObject("Chilkat.SCard")
if li_rc < 0 then
    destroy loo_Scard
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// First establish a context to the PC/SC Resource Manager
li_Success = loo_Scard.EstablishContext("user")
if li_Success = 0 then
    Write-Debug loo_Scard.LastErrorText
    destroy loo_Scard
    return
end if

loo_StReaders = create oleobject
li_rc = loo_StReaders.ConnectToNewObject("Chilkat.StringTable")

li_Success = loo_Scard.ListReaders(loo_StReaders)
if li_Success = 0 then
    Write-Debug loo_Scard.LastErrorText
    destroy loo_Scard
    destroy loo_StReaders
    return
end if

li_NumReaders = loo_StReaders.Count
i = 0
do while i < li_NumReaders
    Write-Debug string(i) + ": " + loo_StReaders.StringAt(i)
    i = i + 1
loop

// Sample output:
// 0: Alcor Micro USB Smart Card Reader 0
// 1: FS USB Token 0
// 2: FT Java Token 0
// 3: SCM Microsystems Inc. SCR33x USB Smart Card Reader 0
// 4: Yubico YubiKey OTP+FIDO+CCID 0

// Applications should always release the context when finished.
li_Success = loo_Scard.ReleaseContext()
if li_Success = 0 then
    Write-Debug loo_Scard.LastErrorText
end if



destroy loo_Scard
destroy loo_StReaders