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sciter-sdk
sciter::Window::attach - how to call?
Hi,
I'm trying out Sciter as a UI engine for my Rust app that runs on macOS.
I need a system menu, so I use cocoa crate to create a NSApplication and a NSWindow.
Unfortunately, I can't make sciter::Window::attach to work: it crashes every time I call it.
The code is pretty much as follows (menu creation is omitted):
use sciter;
use cocoa::base::nil;
use cocoa::foundation::NSAutoreleasePool;
use cocoa::appkit::{NSApplication, NSWindow};
fn main() {
unsafe {
let _pool = NSAutoreleasePool::new(nil);
}
let app = create_app();
let window = add_window();
let mut frame = sciter::Window::attach(window);
frame.load_html(br#"<html><body>Hello world!</body></html>"#, Some("x:main"));
unsafe {
app.run();
}
}
fn create_app() -> cocoa::base::id {
unsafe {
let app = cocoa::appkit::NSApp();
app.setActivationPolicy_(cocoa::appkit::NSApplicationActivationPolicyRegular);
app
}
}
fn add_window() -> sciter::types::HWINDOW {
unsafe {
let window = NSWindow::alloc(nil).initWithContentRect_styleMask_backing_defer_(
cocoa::foundation::NSRect::new(cocoa::foundation::NSPoint::new(0., 0.), cocoa::foundation::NSSize::new(300., 200.)),
cocoa::appkit::NSWindowStyleMask::NSTitledWindowMask,
cocoa::appkit::NSBackingStoreBuffered,
cocoa::base::NO
).autorelease();
window.center();
window.makeKeyAndOrderFront_(nil);
window.contentView() as _
}
}
It doesn't matter if I try to pass window itself or window.contentView() - it still crashes on sciter::Window::attach line with the following message:
2019-08-29 16:03:10.938 sciter-app[28447:3486458] -[NSView engine]: unrecognized selector sent to instance 0x7ff96f830190
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/libcore/option.rs:347:21
Could you please help me to make it work? Thanks!
The crash happens on the following line:
https://github.com/sciter-sdk/rust-sciter/blob/ef93434c1ba684b2f9a64c9da5d70c3595971353/src/host.rs#L203
Interesting. So, that line works for a created window, but doesn't for a attached one?
In general, I need to test the attaching because I've checked on Windows only.
Relatedly, on x11 I get a segmentation fault when trying to render to another window.
Programs as simple as:
let ptr = 0x1e6ad8c as HWINDOW; // existing Window ID obtained via running xwininfo
let frame = sciter::Window::attach(ptr);
frame.run_app();
will segfault when run.
xwininfo returns an X window handle.
GtkWidget is a confusing type for that value given that
A) GtkWindow exists, and
B) it's named as a handle