With this patch applied, the DemoRunner should build under MinGW, and be
(nearly) feature-complete compared to the MSVC build.
Specifically, when building with MinGW:
- Adds support for accessibility
- Fixes build issues in the juce_video module
- Fixes a link issue in the VST3 wrapper when VST3_CAN_REPLACE_VST2 is
defined
- Adds support for the new-style native FileChooser
- Tidies up some other low-severity warnings
Known issues:
- Direct2D rendering is still not supported when building with MinGW due
to ABI compatibilities.
The 'wrapper' accessibility handler is now ignored if a menu item has a
custom component, and has no submenu, and cannot be triggered
automatically. This avoids the case where a custom menu item may end up
with a wrapper accessibility handler that has no useful actions.
This patch also adds a 'label' argument to the addCustomItem functions,
which allows text for the screen reader to be supplied in the case where
a custom component is in use, but the menu item has accessibility
actions.
Effects of this change for windows with native titlebars:
- Resizable windows without maximise buttons will now only allow the
'zoom' behaviour from the rightmost titlebar button (i.e. this button
will not allow entering full-screen mode)
- Non-resizable windows will grey-out the rightmost titlebar button,
whether or not the maximise button is enabled
When FileChooser instances were created, launched, and hidden all inside
the same event callback on macOS 12.0.1, the chooser dialog sometimes
remained open. This could cause problems including crashes, as closing
the dialog would attempt to call a completion handler block referencing
an already-deleted FileChooser::Native instance.
Opening the chooser panel later on the message thread seems to resolve
the issue.
This mirrors the behaviour on Linux, where maximizing a window always
fills the screen, even if a constrainer is active.
If you don't want to allow your component to fill the screen, disable
the maximize button in the window's titlebar when creating the window
(i.e. ensure DocumentWindow::maximiseButton is not set in the required
buttons).
