Attached the Qt project to quickly build/test the bug

qtproject_formdesigner.zip

At first thanks for porting Qt to the WebAssembly platform, the ability to run our Qt desktop/mobile applications as web applications without modification is a great addition to the Qt framework.

I am using the Ring programming language & RingQt to develop my Qt projects

Ring is a dynamic programming language (similar to Python) that uses Qt as it's standard GUI library and support any platform supported by Qt (including WebAssembly)

In little time I ported some of our samples/applications to Qt for WebAssembly like

Hello World : http://ring-lang.sourceforge.net/web/helloworld/project.html

Matching Game : http://ring-lang.sourceforge.net/web/matching/project.html

Othello Game : http://ring-lang.sourceforge.net/web/othello/project.html 

Game of Life : http://ring-lang.sourceforge.net/web/gameoflife/project.html

Pairs Game : http://ring-lang.sourceforge.net/web/pairs/project.html

Word Game : http://ring-lang.sourceforge.net/web/wordgame/project.html 

In the last week I worked on porting some larger application (The Form Designer - Around 10,000 lines of code)

Form Designer URL : http://ring-lang.sourceforge.net/web/test/formdesigner/project.html 

I did some changes to the code to be usable on the WebAssembly platform like

(1) Avoiding exec() in Color Dialogs, Font Dialogs & File Dialogs

(2) Adding Upload/Download features to escape from the sandbox (using QFileDialog special API for WebAssembly)

After finishing this work, I discovered the next little bugs

(1) When I create new forms and save these forms in the memory file system (MEMFS) - then the QFileDialog can't see these new files until I type the file name. When I type it, the dialog can see it and add it to the list view.

If I save many files (for example : form1.rform, form2.rform, etc) - I can't see any of them (to open them later in the same session - I know that the data will be lost after page reload or closing the browser, But I can reuse the files saved in memory in the same session, which is good but since the QFileDialog doesn't display these file - I have to remember the name of each file!)

What I need is a method to refresh the QFileDialog and force it to display all files - maybe something like rereadDir() in old Qt versions ?

(2) From the Menu bar - select a any menu like (File - Edit - View - Help) the menu will appears, move the mouse on the first item , click the item but keep clicking and move the mouse, The menu will be moved with you!! ---> Is this a feature ? - I think it's a bug.

(3) I tried to change the Window icon and I added it to the resource file, but I still see Qt icon, is this a bug? or the WebAssembly port doesn't support changing the icon? or there is a limitation in the icon file extension? I am using a png file and I access it through qrc file like the other images used in the application.

Number (2) and (3) are little issues, Number (1) can be avoided  using only download/upload features, but it will be nice if this problem is solved. So in the future I can use (Download/Upload) with zip files that contains many forms files, then I extract these files to the MEMFS where I can use the project files and switch quickly between them.

Thanks again for the WebAssembly port