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fix(host/windows): correct SetDisplayConfig slice signature + local DISPLAYCONFIG_PATH_ACTIVE

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Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Enrico Bühler
2026-06-16 13:17:54 +00:00
parent 2ac1014e8e
commit 60bb9727d6
1 changed files with 9 additions and 9 deletions
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crates/punktfunk-host/src/vdisplay/sudovda.rs
+9 -9
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@@ -25,7 +25,7 @@ use windows::Win32::Devices::Display::{
DisplayConfigGetDeviceInfo, DisplayConfigSetDeviceInfo, GetDisplayConfigBufferSizes,
QueryDisplayConfig, SetDisplayConfig, DISPLAYCONFIG_DEVICE_INFO_GET_SOURCE_NAME,
DISPLAYCONFIG_DEVICE_INFO_SET_ADVANCED_COLOR_STATE, DISPLAYCONFIG_MODE_INFO,
DISPLAYCONFIG_PATH_ACTIVE, DISPLAYCONFIG_PATH_INFO, DISPLAYCONFIG_SET_ADVANCED_COLOR_STATE,
DISPLAYCONFIG_PATH_INFO, DISPLAYCONFIG_SET_ADVANCED_COLOR_STATE,
DISPLAYCONFIG_SOURCE_DEVICE_NAME, QDC_ONLY_ACTIVE_PATHS, SDC_ALLOW_CHANGES, SDC_APPLY,
SDC_USE_SUPPLIED_DISPLAY_CONFIG,
};
@@ -479,6 +479,10 @@ unsafe fn restore_displays(saved: &[(String, DEVMODEW)]) {
/// Saved active display topology, for restoring on teardown.
type SavedConfig = (Vec<DISPLAYCONFIG_PATH_INFO>, Vec<DISPLAYCONFIG_MODE_INFO>);
/// `DISPLAYCONFIG_PATH_ACTIVE` (wingdi.h) — the `flags` bit marking a path active. The `windows` crate
/// doesn't export it, so define it here.
const DISPLAYCONFIG_PATH_ACTIVE: u32 = 0x0000_0001;
/// Robust display isolation via the CCD API. The legacy [`isolate_displays`] (EnumDisplayDevices +
/// ChangeDisplaySettings) MISSES displays on a hybrid box — an iGPU-attached physical monitor isn't
/// flagged `ATTACHED_TO_DESKTOP` in the GDI enum, so it's never detached and the secure desktop /
@@ -524,10 +528,8 @@ unsafe fn isolate_displays_ccd(keep_target_id: u32) -> Option<SavedConfig> {
return Some(saved);
}
let rc = SetDisplayConfig(
paths.len() as u32,
Some(paths.as_ptr()),
modes.len() as u32,
Some(modes.as_ptr()),
Some(paths.as_slice()),
Some(modes.as_slice()),
SDC_APPLY | SDC_USE_SUPPLIED_DISPLAY_CONFIG | SDC_ALLOW_CHANGES,
);
if rc == 0 {
@@ -546,10 +548,8 @@ unsafe fn restore_displays_ccd(saved: &SavedConfig) {
return;
}
let rc = SetDisplayConfig(
paths.len() as u32,
Some(paths.as_ptr()),
modes.len() as u32,
Some(modes.as_ptr()),
Some(paths.as_slice()),
Some(modes.as_slice()),
SDC_APPLY | SDC_USE_SUPPLIED_DISPLAY_CONFIG | SDC_ALLOW_CHANGES,
);
tracing::info!("display isolate (CCD): restored original topology rc={rc:#x}");