[app kit] can't understand how to get all file types on Mac OS big sur can I get an example

[silageman]

https://www.ultraengine.com/learn/CPP/RequestFile

the documentation is not great here am trying to pass in a file any file so I can convert with FFmpeg just need an example of request file that will accept any file extension on Mac OS big sur. 

 

thanks

Edited November 7, 2021 by silageman
added screen grab

[Josh]

The default value for the file filter parameter should accept all files:

All Files:*

Are the files in the screenshot not selectable?

[silageman]

No josh only folders are selectable in the screenshot why is this?

[Josh]

Checking....

[silageman]

#include "UltraEngine.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 640, 480, displays[0], WINDOW_TITLEBAR | WINDOW_CENTER);

    //Create User Interface
    auto ui = CreateInterface(window);

    //Create buttons
    int x = (window->ClientSize().x - 120) / 2;
    int y = 350;
    int sep = 0;

    auto button = CreateButton("CONVERT", x, y, 300, 60, ui->root);
    y += sep;

   
    while (true)
    {
        const Event ev = WaitEvent();
        switch (ev.id)
        {
            case EVENT_WIDGETACTION:
                if (ev.source->As<Widget>()->text == "CONVERT") {
             
                    WString file = RequestFile("Open File", "", "All Files:*", 0, false);
                    
                    Print(file);
                    return 0;
                    //Print(Command("./ffmpeg -h"));
                }
                break;
            case EVENT_WINDOWCLOSE:
                return 0;
                break;
        }
    }
    return 0;
}

here just to make easier, latest Xcode and app kit from the App Store on big sur. it's hardly a permission thing?

[Josh]

So far I am unable to find any mention of asterisks / wildcard characters in the NSOpenPanel file types. It may be that Cocoa requires you to explicitly specify what file types are allowed.  Do you know the specific file types your application should support?

[Josh]

Okay, it appears that asterisk wild cards are not supported, at least I can't find any mention of them. It's not a perfect solution, but I programmed a special case when just one file extension is specified using an asterisk character (the default setting). When this occurs the requester will allow any file extension.

This change will be included in the next update. Until then, I would explicitly specify each file format your application supports (which is probably the better approach anyways).

[silageman]

ok thanks.

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WString file = RequestFile("Open File", "", "TEXT FILES(*.txt):txt", 0, false);

 

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