如何在MQL5中调用.cpp文件？

Question

我正在尝试调用#import "BPNN1.dll" string Train( double &inpTrain[], // Input training data (1D array carrying 2D data, old first) double &outTarget[],// Output target data for training (2D data as 1D array, oldest 1st) double &outTrain[], // Output 1D array to hold net outputs from training int ntr, // # of training sets int UEW, // Use Ext. Weights for initialization (1=use extInitWt, 0=use rnd) double &extInitWt[],// Input 1D array to hold 3D array of external initial weights double &trainedWt[],// Output 1D array to hold 3D array of trained weights int numLayers, // # of layers including input, hidden and output int &lSz[], // # of neurons in layers. lSz[0] is # of net inputs int AFT, // Type of neuron activation function (0:sigm, 1:tanh, 2:x/(1+x)) int OAF, // 1 enables activation function for output layer; 0 disables int nep, // Max # of training epochs double maxMSE // Max MSE; training stops once maxMSE is reached ); string Test( double &inpTest[], // Input test data (2D data as 1D array, oldest first) double &outTest[], // Output 1D array to hold net outputs from training (oldest first) int ntt, // # of test sets double &extInitWt[],// Input 1D array to hold 3D array of external initial weights int numLayers, // # of layers including input, hidden and output int &lSz[], // # of neurons in layers. lSz[0] is # of net inputs int AFT, // Type of neuron activation function (0:sigm, 1:tanh, 2:x/(1+x)) int OAF // 1 enables activation function for output layer; 0 disables ); #import 文件，以便我可以使用dll中的函数。但我失败了。看到我遇到的错误：

.cpp

错误：

所以这意味着dll无法加载和读取。那么我有没有办法在我的MQL5程序中包含{{1}}源文件并使用它？请建议我出路。