PowerBuilder

QR Code Generator via api.qrserver.com REST API

See more HTTP Examples

Demonstrates how to generate a QR code using the api.qrserver.com REST API service. PowerBuilder

integer li_rc
long li_Success
oleobject loo_Http
oleobject loo_QueryParams
oleobject loo_Resp
oleobject loo_Bd

li_Success = 0

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

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

//  Send the following GET request to get a binary response.
//  The body of the binary response contains the image data for the QR code.
//  https://api.qrserver.com/v1/create-qr-code/?data=[URL-encoded-text]&size=[pixels]x[pixels]

loo_QueryParams = create oleobject
li_rc = loo_QueryParams.ConnectToNewObject("Chilkat.JsonObject")

loo_QueryParams.UpdateString("data","Hello World")
loo_QueryParams.UpdateString("size","100x100")

//  Get a PNG file..
//  Possible formats are:
//  png
//  gif
//  jpeg
//  jpg
//  svg
//  eps
//  Case matters.  Use lowercase.
loo_QueryParams.UpdateString("format","png")

//  Send the GET request to an endpoint.
//  Chilkat will add the url-encoded query params passed in the JSON.
loo_Resp = create oleobject
li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse")

li_Success = loo_Http.HttpParams("GET","https://api.qrserver.com/v1/create-qr-code/",loo_QueryParams,loo_Resp)
if li_Success = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_QueryParams
    destroy loo_Resp
    return
end if

//  Did it succeed?
if loo_Resp.StatusCode <> 200 then
    //  The response body, if anything, would not be the image data, but would likely be the error text (or HTML, or whatever...)
    Write-Debug loo_Resp.BodyStr
    Write-Debug "Response status = " + string(loo_Resp.StatusCode)
    Write-Debug "Failed."
    destroy loo_Http
    destroy loo_QueryParams
    destroy loo_Resp
    return
end if

//  Success if we get here..
//  Save the binary body as the PNG file, or you can get the bytes of the PNG..
li_Success = loo_Resp.SaveBodyBinary("c:/temp/qa_output/qr_code.png")

//  Or get the bytes:
loo_Bd = create oleobject
li_rc = loo_Bd.ConnectToNewObject("Chilkat.BinData")

loo_Resp.GetBodyBd(loo_Bd)
//  Use the bytes in bd...
//  See the online reference documentation for the function to access the bytes directly.

Write-Debug "Success."


destroy loo_Http
destroy loo_QueryParams
destroy loo_Resp
destroy loo_Bd