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fix check virtual display on windows

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Signed-off-by: fufesou <shuanglongchen@yeah.net>
This commit is contained in:
fufesou 2023-05-18 21:44:09 +08:00
parent c6ccee67aa
commit b8ea705a21
1 changed files with 17 additions and 17 deletions
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34
src/platform/windows.rs
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@ -1891,25 +1891,25 @@ pub fn current_resolution(name: &str) -> ResultType<Resolution> {
}
pub fn is_virtual_display(name: &str) -> ResultType<bool> {
let device_name = str_to_device_name(name);
let mut dd: DISPLAY_DEVICEW = unsafe { std::mem::zeroed() };
dd.cb = std::mem::size_of::<DISPLAY_DEVICEW>() as _;
let ok = unsafe { EnumDisplayDevicesW(device_name.as_ptr(), 0, &mut dd as _, 0) };
if ok == FALSE {
bail!(
"enumerate display devices with device name '{}', errno {}",
name,
unsafe { GetLastError() }
);
}
match std::string::String::from_utf16(&dd.DeviceString) {
Ok(s) => Ok(&s[..IDD_DEVICE_STRING.len()] == IDD_DEVICE_STRING),
Err(e) => bail!(
"convert the device string of '{}' to string: {}",
name,
e
),
dd.cb = std::mem::size_of::<DISPLAY_DEVICEW>() as DWORD;
let mut i_dev_num = 0;
loop {
let result = unsafe { EnumDisplayDevicesW(null_mut(), i_dev_num, &mut dd, 0) };
if result == 0 {
break;
}
if let Ok(device_name) = String::from_utf16(&dd.DeviceName) {
if device_name == name {
return match std::string::String::from_utf16(&dd.DeviceString) {
Ok(s) => Ok(&s[..IDD_DEVICE_STRING.len()] == IDD_DEVICE_STRING),
Err(e) => bail!("convert the device string of '{}' to string: {}", name, e),
};
}
}
i_dev_num += 1;
}
bail!("No such display '{}'", name)
}
pub fn change_resolution(name: &str, width: usize, height: usize) -> ResultType<()> {