anybody use file system in visual studio simulation？
lv\_fs\_res\_t my\_open\_cb(struct \_lv\_fs\_drv\_t * drv, void * file\_p, const char * path, lv\_fs\_mode\_t mode)

{

printf("open dir :%s\n", path);

lv\_fs\_file\_t * file\_1 = (lv\_fs\_file\_t *)file\_p;

file\_1->file\_d = open(path, o\_rdwr);

printf("fd :%d\n", file\_1->file\_d);

return 0;

}

lv\_fs\_res\_t my\_read\_c…
seek and tell are still required.

see here: <https://docs.lvgl.io/latest/en/html/overview/file-system.html#use-drivers-for-images>
It' just standard c++ ifstream and ofstream. When the program starts, try to open the file, if it success then read it. hello,

there are more possibilities how write output to file. first is by standard methods of jscript by “scripting.filesystemobject”.

var fso = new activexobject(“scripting.filesystemobject”);

var forreading = 1;

var forwriting = 2;

if (fso.fileexists(‘c:\test.txt’))

var f1 = fso.opentextfile… Try to xcopy the data over to the external drive.



start>run>type "cmd">hit ok  

In dos window type "xcopy /?" this will show you all of the parameters or switchs used in xcopy.



If you are not famaliar with dos you may want to seek out a friend who is. Hi Valdeth. You should use input and output file streams if you want to write and read from a file. Basically you open the file for writing and once you are done close the file. Later you can open the file for reading. The example below reads numbers from the file and just prints them out. If you want to read the file line by line you should look at the getline() function. I have just used your initial array to come up with a result per array which gives the product of all negative numbers in the array. Note that there **HAS** to be at least 1 negative number per array.



```
const int m=4, n=5;
	int i,j;
	int num;
	int result;
	int A[m][n]={{5,3,-4,8,2},
				 {1,5,2,7,-8},
				 {-3,9,5,2,4},
				 {4,-1,3,6,8}};

	ofstream outfile;
	ifstream infile; 

	outfile.open("c:/matrix/matrix.txt");

	for (i=0;i<m;i++)
	{
		result = 1;

		for (j=0;j<n;j++)
		{
			outfile << setw(3)<< A[i][j];

                            // Multiply negative numbers in each array (has to be at least 1 negative number in each array)
			if (A[i][j] < 0)              				                      result *= A[i][j];  // result = result x A[i][j]
		}
		cout << "Result of array " << i << " is " << result << endl;
		outfile << "\n";
	}

	outfile.close(); // Close for writing

	infile.open("c:/matrix/matrix.txt"); // opens the file
    
	infile >> num;
	while ( !infile.eof() ) 
	{ // keep reading until end-of-file
		cout << "The next number is " << num << endl;
		infile >> num; // sets EOF flag if no value found
	}
	infile.close();  //Close for reading
``` hi [@gus\_fring](/u/gus_fring)

welcome to community :slight\_smile:

you have to set the path with the file name. not only the path of folder.

for example you have the folder temp in c and the file name is inputdata.xlsx

your path should be then: c:\temp\inputdata.xlsx

best regards

mahmoud looking around i think i found the answer myself.

there is are batch and script files in jabref/runtime/bin.

from those, the needed command line call can be derived. using the shipped jvm from inside the mentioned folder the call i looked for would be:

java --add-opens=javafx.controls/javafx.scen… hi,

i can compile your code without error.

could you help to double check your makefile and environment?

environment is set by jetpack2.3.1

topic\_988388.cpp

#include "nvxio/application.hpp"

#include "nvx/nvx\_opencv\_interop.hpp"

#include <opencv2/imgproc/imgproc.hpp>

std::vector<cv::mat> tovisi… xxVLLSP is the value list file in SYNON. When adding new conditions to SYNON model the converted values (external and internal) gets stored in xxVLLSP. On promotion to other libraries if the file in not promoted then the values will not appear when using the DSPF. thanks for responding so quickly. i figured out my problem and found that i needed to enter the software code that came with my cd-dvd case. that got my software working. start vvvv.exe /o "your\_patch\_here.v4p" /allowmultiple

edit: meh, too late…