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I'm using Statistica 64 VB. I wrote a function "Public MyFunction()" in FileLibrary.svb (a collection of useful functions) that I want to be called by a function in FileDoStuff.svb (an analysis).
I tried to include FileLibrary.svb like this in FileDoStuff.svb:
'#Language "WWB-COM"
'#Uses "U:\TestSVB\FileLibrary.svb"
This is the result when I run Main() in FileDoStuff, and the result is the same even if I have FileLibrary open in the application.
"Script error in FileDoStuff.svb
Macro/module does not exist."
Statistica is on the E: drive. However, FileLibrary opens a spreadsheet on U: and has no problem with it. I am able to open FileLibrary from Statistica and test it.
Why would it work to open an external spreadsheet but not call an external macro? The FileLibrary is not saved within Statistica, but neither is the analysis in FileDoStuff. What am I doing wrong?
Also, what's the difference between an SVB and an SVX file?
You know what really helps, as I discovered after hours of trying everything?
Try spelling the entire path name and the entire file name correctly, including spaces, etc. And make sure the slashes go the right way, too. (In my real path/file there are spaces.)
As much as I'd like to delete this whole question, I'm leaving it here to remind us all that sometimes the answer is just that simple. Also, I want to draw more people out who are using Statistica VB because I know there will be more questions.
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My task is to create an avi file by saving n number of frames in c++ .
There are many inbuilt function which can be used to create .avi file as given in below link .
https://learn.microsoft.com/en-us/windows/desktop/multimedia/avifile-reference
Using them we can create our own avifile , one such example.is
http://www.wischik.com/lu/programmer/avi_utils.html
But i want to create it without using Windows.h and vfw.h as they are very extensive.
So i need to make my own function of avifilewrite , appendframes etc
But i can't find any reference link on internet .
Can anyone please explain how can i build avifile without using Windows.h and vfw.h .
Thank you ,
How to create an ... file ...?
You can use the standard file stream API to create a file. To write a binary file, you'll need to use an unformatted output function such as std::ofstream::write().
... an avi file from scratch?
The AVI format is specified by Microsoft: https://learn.microsoft.com/en-us/windows/desktop/directshow/avi-riff-file-reference
However, you can save a lot of effort by using an existing API.
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Put simply, I have a browser widget I'm using in FLTK Gui toolkit which can be loaded using a file like so.
browser::load("textfile.txt");
The problem is I don't want to create a physical text file, just an invisible one so I can use it as an argument for browser::load above. I plan to use this invisible text file by loading it with the values I'm going to place in my browser....then use it like this.
browser::load("invisible_textfile.txt");
Is it possible to do this in C++?
I have already tried using ifstream::rdbuf() which probably has nothing to do with this. I'm not even sure what to call this so I'm just calling it an invisible textfile for now.
I'm using windows 7 64 bit. MinGW compiler.
Let's say what you want to add is equivalent of text file like this:
One
Two
Three
But you don't want to have the text file. So one piece of code which would do the same thing is this:
const char *lines[] = { "One", "Two", "Three", 0 };
for(int i = 0 ; lines[i] != 0 ; ++i)
browser.add(lines[i]);
Documentation link for that overload of add
Please refine your question, or perhaps ask a new question, if you want more help on how to get lines with your data.
It depends a lot on what browser::load() actually does internally, but let's assume that it will look for your filename and load it.
You probably already know how to read / write a standard file (e.g. http://www.cplusplus.com/doc/tutorial/files/). Now, if you just want to hide the file from the user, you can set OS specific hidden flags (e.g. windows). I'm assuming that's not what you actually want to accomplish here. (You could obviously also create a temporary file that you delete again, but it's not an elegant solution either.)
What you might want to use is a named pipe. Under Linux you can create these with mkfifo and then stream content through those file objects.
The general point is, though, unless the browser API allows you to pass it a complete string holding the text file or a stringstream, you will need a file object.
If your only target system is NTFS, there is a good answer on creating virtual files over here:
How to create a virtual file?
But in the end, you probably want to create an actual file (in your case probably a temporary one, though). I would recommend placing that file into the systems temporary path.
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I have a little program that I made which allows me to take in some text and sort it and make it look the way I want it to. One of my functions to save the new text file allows the user to input the name of the file using C++.
What I want to do is at the end of the program, I want it to open notepad displaying that new text file. I know you use " system("notepad.exe (txt file)")." But I can't add a string variable in place of the txt file. It requires the name of the text file, but the file name could be anything depending on the user.
Any help or a link to where I can read about it would be great!
Thanks
Assemble the command in a std::string and then use its c_str function to pass to system.
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I am working on a program that needs to unzip .zip files. After trying several different methods to do this, the only one I could find that worked for all my needs is 7z.exe. It works great as I'm developing since I can just hardcode the location of the executable into the code. However, if anyone else tries to use it, that part won't work. Is there any way to allow them to access this? Thanks!
I suggest you use a compression library (have a look at libarchive: http://www.libarchive.org). If you can't do that, you should ship 7z.exe and its dependencies with your application, putting them in a fixed relative location to your main executable.
Then you get your main executable absolute path using GetModuleFileName, strip and combine with the relative path using PathCchCombine:
char filename[MAX_PATH];
GetModuleFileName(NULL,filename,(sizeof(filename))/(sizeof char));
PathCchRemoveFileSpec(filename,(sizeof(filename))/(sizeof char));
PathCchCombine(filename,(sizeof(filename))/(sizeof char),filename,"./7zip/7zip.exe");
//the absolute path of 7z.exe is now in filename
Documentation for GetModuleFileName:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms683197(v=vs.85).aspx
PathCchRemoveFileSpec:
http://msdn.microsoft.com/en-us/library/hh707092(v=vs.85).aspx
and for PathCchCombine:
http://msdn.microsoft.com/en-us/library/hh707085(v=vs.85).aspx
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I'm we're trying to figure out if there would be a way to convert a .txt file to a .pdf file. Here's the catch. This needs to be done behind the scenes, and on the fly. Meaning, with a radio control selected, OnOK would create a .txt file. Behind the scenes, at run time, we would like for the .txt file to be converted to a .pdf file. Ideally we would like this to be done by running an executable in the background. The executable would take input "File.txt" and output "File.pdf". We're using C++ and Visual Studio 6.
Does anyone have any experience on this? Is this possible?
libHaru may do what you want. Demo.
This a2pdf tool will probably do the trick with minimal effort. Just be sure to turn off perl syntax highlighting.
http://perl.jonallen.info/projects/a2pdf
I recommend using this open source library.
Once you have the base for generating PDF documents programmatically, you would still need a method for converting the text to the PDF elements, while keeping the text flow and word wrapping. This article may help. Please pay attention to the DoText(StreamReader sr) function. It takes text and purge it into separate lines within the PDF document, keeping the rendered within the margins.
On of the simpler methods that has worked for 3 decades e.g. more than one quarter of a century is place a postscript header before the text then use ghostscript ps2pdf it is the same method as used by some commercial apps such as acrobat
at its most basic
Copy heading.ps file.txt printfile.ps
GS -sDEVICE=pdfwrite printfile.ps printfile.pdf
Master Example can be seen here
How to modify this plaintext-to-PDF-converting PostScript from 1992 to actually specify a page size?