Check for Existing File

In wxWidgets, you can check if a file exists using the wxFileExists() function. This function takes a single argument, which is the full path to the file you want to check.

Here’s an example of how to use wxFileExists():
[codesyntax lang=”cpp”]

#include <wx/wx.h>

int main(int argc, char* argv[])
{
    wxString filename = "/path/to/file.txt";
    if (wxFileExists(filename))
    {
        wxPrintf("%s exists!\n", filename);
    }
    else
    {
        wxPrintf("%s does not exist!\n", filename);
    }
    return 0;
}

[/codesyntax]

In this example, the wxString variable filename holds the path to the file we want to check. We then call wxFileExists() with filename as its argument. If the file exists, the function returns true, and we print a message saying so. If the file does not exist, the function returns false, and we print a different message.

Note that wxFileExists() is platform-dependent and may not work the same way on all operating systems. Also, it only checks if the file exists and not whether the user has permission to access it or not.

Mr. Arch Brooks, Software Engineer, Brooks Computing Systems, LLC authored this article.