come from:https://www.example-code.com/mfc/rest_simple.asp
http://www.cknotes.com/how-to-use-mfc-cstring-in-chilkat/
#include <CkRest.h>
void ChilkatSample(void)
{
CkString strOut;
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
CkRest rest;
// Connect to the REST server.
bool bTls = true;
int port = 443;
bool bAutoReconnect = true;
bool success = rest.Connect("www.alphavantage.co",port,bTls,bAutoReconnect);
if (success != true) {
strOut.append(rest.lastErrorText());
strOut.append("\r\n");
SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
return;
}
// Get a stock quote:
// Sending GET request to https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=my_api_key
success = rest.AddQueryParam("function","TIME_SERIES_DAILY");
success = rest.AddQueryParam("symbol","AAPL");
success = rest.AddQueryParam("apikey","my_api_key");
const char *responseJson = rest.fullRequestNoBody("GET","/query");
if (rest.get_LastMethodSuccess() != true) {
strOut.append(rest.lastErrorText());
strOut.append("\r\n");
SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
return;
}
strOut.append(responseJson);
strOut.append("\r\n");
// Sample response:
// {
// "Meta Data": {
// "1. Information": "Daily Prices (open, high, low, close) and Volumes",
// "2. Symbol": "AAPL",
// "3. Last Refreshed": "2019-12-06",
// "4. Output Size": "Compact",
// "5. Time Zone": "US/Eastern"
// },
// "Time Series (Daily)": {
// "2019-12-06": {
// "1. open": "267.4800",
// "2. high": "271.0000",
// "3. low": "267.3000",
// "4. close": "270.7100",
// "5. volume": "25447644"
// },
// "2019-12-05": {
// "1. open": "263.7900",
// "2. high": "265.8900",
// "3. low": "262.7300",
// "4. close": "265.5800",
// "5. volume": "18661343"
// },
// "2019-12-04": {
// "1. open": "261.0700",
// "2. high": "263.3100",
// "3. low": "260.6800",
// "4. close": "261.7400",
// "5. volume": "16810388"
// },
// ...
// "2019-07-18": {
// "1. open": "204.0000",
// "2. high": "205.8800",
// "3. low": "203.7000",
// "4. close": "205.6600",
// "5. volume": "18582161"
// }
// }
// }
SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
}
https://stackoverflow.com/questions/26406377/call-web-server-from-mfc-form-application