'CryptQueryObject' was not declared in this scope

Question

#include <wincrypt.h> has already been added, so why does the GCC-mingw32 compiler report this error?

'CryptQueryObject' was not declared in this scope

I'm working on Window 10.

Here is my code:

#include <iostream>
#include <wincrypt.h>
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
//#pragma comment(lib, "crypt32.lib")
#define ENCODING (X509_ASN_ENCODING | PKCS_7_ASN_ENCODING)
using namespace std;

int _tmain(int argc, TCHAR *argv[])
{
    BOOL bIsSuccess;
    DWORD dwEncoding, dwContentType, dwFormatType;
    HCERTSTORE hStore = NULL;
    HCRYPTMSG hMsg =NULL;
    PVOID pvContext = NULL;
    string szFileName;
    szFileName ="C:\\WINDOWS\\System32\\lsass.exe";
    bIsSuccess = CryptQueryObject(CERT_QUERY_OBJECT_FILE,
                               szFileName,
                               CERT_QUERY_CONTENT_FLAG_ALL,
                               CERT_QUERY_FORMAT_FLAG_ALL,
                               0,
                               &dwEncoding,
                               &dwContentType,
                               &dwFormatType,
                               &hStore,
                               &hMsg,
                               &pvContext);

Answer 1

• Including wincrypt.h after windows.h otherwise it also report errors when compiling with Visual Studio.
• Link crypt32.lib

Compile command like this:

i686-w64-mingw32-g++ test.cpp -lcrypt32

Edited code as below:

#include <iostream>
#include <windows.h>
#include <wincrypt.h>
#include <tchar.h>
#include <stdio.h>
//#pragma comment(lib, "crypt32.lib")
#define ENCODING (X509_ASN_ENCODING | PKCS_7_ASN_ENCODING)
using namespace std;

int _tmain(int argc, TCHAR* argv[])
{
    BOOL bIsSuccess;
    DWORD dwEncoding, dwContentType, dwFormatType;
    HCERTSTORE hStore = NULL;
    HCRYPTMSG hMsg = NULL;
    PVOID pvContext = NULL;
    string szFileName;
    szFileName = "C:\\WINDOWS\\System32\\lsass.exe";
    bIsSuccess = CryptQueryObject(CERT_QUERY_OBJECT_FILE,
        (const void*)szFileName.c_str(),
        CERT_QUERY_CONTENT_FLAG_ALL,
        CERT_QUERY_FORMAT_FLAG_ALL,
        0,
        &dwEncoding,
        &dwContentType,
        &dwFormatType,
        &hStore,
        &hMsg,
        (const void**)&pvContext);
}