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
integer 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