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windows: Fix incorrect button ID setting for TaskDialog (#25391)

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Closes #22821

It turns out that on Windows, the `Cancel` button should **always** have
a button ID of `2`. Even if the button label is something like "Don't
Cancel", when the user presses the `Esc` key, Windows will still report
that the button with ID `2` was pressed.

Release Notes:

- N/A
This commit is contained in:
张小白 2025-02-22 23:39:43 +08:00 • committed by GitHub
parent 7a55da58d9
commit 10053e2566
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GPG key ID: B5690EEEBB952194
1 changed files with 19 additions and 9 deletions
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28
crates/gpui/src/platform/windows/window.rs
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@ -14,7 +14,6 @@ use ::util::ResultExt;
use anyhow::{Context as _, Result};
use async_task::Runnable;
use futures::channel::oneshot::{self, Receiver};
use itertools::Itertools;
use raw_window_handle as rwh;
use smallvec::SmallVec;
use windows::{
@ -577,8 +576,7 @@ impl PlatformWindow for WindowsWindow {
.executor
.spawn(async move {
unsafe {
let mut config;
config = std::mem::zeroed::<TASKDIALOGCONFIG>();
let mut config = TASKDIALOGCONFIG::default();
config.cbSize = std::mem::size_of::<TASKDIALOGCONFIG>() as _;
config.hwndParent = handle;
let title;
@ -599,19 +597,26 @@ impl PlatformWindow for WindowsWindow {
};
config.pszWindowTitle = title;
config.Anonymous1.pszMainIcon = main_icon;
let instruction = msg.encode_utf16().chain(Some(0)).collect_vec();
let instruction = HSTRING::from(msg);
config.pszMainInstruction = PCWSTR::from_raw(instruction.as_ptr());
let hints_encoded;
if let Some(ref hints) = detail_string {
hints_encoded = hints.encode_utf16().chain(Some(0)).collect_vec();
hints_encoded = HSTRING::from(hints);
config.pszContent = PCWSTR::from_raw(hints_encoded.as_ptr());
};
let mut button_id_map = Vec::with_capacity(answers.len());
let mut buttons = Vec::new();
let mut btn_encoded = Vec::new();
for (index, btn_string) in answers.iter().enumerate() {
let encoded = btn_string.encode_utf16().chain(Some(0)).collect_vec();
let encoded = HSTRING::from(btn_string);
let button_id = if btn_string == "Cancel" {
IDCANCEL.0
} else {
index as i32 - 100
};
button_id_map.push(button_id);
buttons.push(TASKDIALOG_BUTTON {
nButtonID: index as _,
nButtonID: button_id,
pszButtonText: PCWSTR::from_raw(encoded.as_ptr()),
});
btn_encoded.push(encoded);
@ -622,9 +627,14 @@ impl PlatformWindow for WindowsWindow {
config.pfCallback = None;
let mut res = std::mem::zeroed();
let _ = TaskDialogIndirect(&config, Some(&mut res), None, None)
.inspect_err(|e| log::error!("unable to create task dialog: {}", e));
.context("unable to create task dialog")
.log_err();
let _ = done_tx.send(res as usize);
let clicked = button_id_map
.iter()
.position(|&button_id| button_id == res)
.unwrap();
let _ = done_tx.send(clicked);
}
})
.detach();