I cant resolve this external symbol

poworoznyk (3)
I have 2 projects

p1:
GestureDLL.cpp

p2:
Main.h
Main.cpp

I am trying to call functions from p1 so that I can export them in the DLL from p2. I have added additional dependecies to the folder where Main.h lies, but am still recieving the error. Could someone please help!!


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  ***************GestureDLL.cpp*********
// GestureDLL.cpp : Defines the exported functions for the DLL application.
//
#pragma once
#pragma comment(lib, "mchp_hmi.lib")
#include "stdafx.h"
//#include <hmi_api.h>
//#include <hmi_dynamic.h>
//#include <hmi_static.h>
#include <stdio.h>
#include <Windows.h>
#include <stdio.h>
#include <conio.h>
#include <Main.h>

using namespace std;

extern "C"
{
	__declspec(dllexport) int Get3DX2()
	{
		//return 1;
		return Get3DX();
	}

	__declspec(dllexport) int Start2()
	{
		return 1;
		//return Start();
	}

}

*****************Main.h*********************
#pragma once

#include <hmi_api.h>
#include <hmi_dynamic.h>
#include <hmi_static.h>
#include <iostream>
using namespace std;

extern "C"
{
	int Get3DX();
	int Start();
}

typedef struct
{
	int running;
	int menu_current;
	int auto_calib;
	int last_gesture;
	int touch_detect;
	int air_wheel;
	int last_mouse;
	int mouse_countdown;

	/* Common */
	hmi_t *hmi;

	/* 3D */
	hmi3d_position_t *out_pos;
	hmi3d_gesture_t *out_gesture;
	hmi3d_signal_t *out_sd;
	hmi3d_calib_t *out_calib;
	hmi3d_touch_t *out_touch;
	hmi3d_air_wheel_t *out_air_wheel;

	/* 2D */
	hmi2d_finger_pos_list_t *fingers;
	hmi2d_mouse_t *mouse;
} data_t;



***********************Main.cpp*****************
#pragma once

#include <stdio.h>
#include "Main.h"

using namespace std;
//
//class Main{
	data_t data;

	int Start()
	{
		hmi_t *hmi = hmi_create();


		const hmi3d_position_t * pos = hmi3d_get_position(hmi);
		const hmi3d_gesture_t * gesture = hmi3d_get_gesture(hmi);
		int last_gesture = 0;

		const int stream_flags = hmi3d_DataOutConfigMask_xyzPosition |
			hmi3d_DataOutConfigMask_GestureInfo;

		hmi2d_finger_pos_list_t *fingers = hmi2d_get_finger_positions(hmi);

		// Create hmi_t instance

		//if (hmi3d_set_output_enable_mask(&hmi, stream_flags, stream_flags,
		//	hmi3d_DataOutConfigMask_OutputAll, 100) < 0)
		//{
		//	fprintf(stderr, "Error: could not set output mask\n");
		//	//exit(-1);
		//}

		if (!hmi) {
			fprintf(stderr, "Could not allocate hmi_t instance\n");
			return -1;
		}

		// Initialize hmi
		hmi_initialize(hmi);

		// Connect to device
		if (hmi_open(hmi) != HMI_NO_ERROR) {
			fprintf(stderr, "Could not connect to HMI device\n");
			return -1;
		}

		printf("Succesfully connected to HMI device\n");

		/* Update device and menu until quit */
		while (1) {
			while (hmi2d_retrieve_data(hmi) == HMI_NO_ERROR) {
				data.out_pos = hmi3d_get_position(hmi);
			}

			// TODO Do other things like sleep etc.
		}
		// Use hmi...

		// Disconnect from device
		hmi_close(hmi);

		// Cleanup
		hmi_cleanup(hmi);

		// And finally freeing the hmi_t instance
		hmi_free(hmi);

		return -1;
	}

	int Get3DX()
	{
		return 5;// data.out_pos->x;
	}

//};
Last edited on
jonnin (11438)
did you remember to include the lib file that goes with the dll file? Check to see if the dll generation project produces one.
Last edited on
poworoznyk (3)
Thanks...Im an idiot lol
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