summaryrefslogtreecommitdiff
path: root/vendor/cc/src/windows/com.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/cc/src/windows/com.rs')
-rw-r--r--vendor/cc/src/windows/com.rs110
1 files changed, 0 insertions, 110 deletions
diff --git a/vendor/cc/src/windows/com.rs b/vendor/cc/src/windows/com.rs
deleted file mode 100644
index 0391b5af..00000000
--- a/vendor/cc/src/windows/com.rs
+++ /dev/null
@@ -1,110 +0,0 @@
-// Copyright © 2017 winapi-rs developers
-// Licensed under the Apache License, Version 2.0
-// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
-// All files in the project carrying such notice may not be copied, modified, or distributed
-// except according to those terms.
-
-use crate::windows::{
- winapi::{IUnknown, Interface},
- windows_sys::{
- CoInitializeEx, SysFreeString, SysStringLen, BSTR, COINIT_MULTITHREADED, HRESULT, S_FALSE,
- S_OK,
- },
-};
-use std::{
- convert::TryInto,
- ffi::OsString,
- ops::Deref,
- os::windows::ffi::OsStringExt,
- ptr::{null, null_mut},
- slice::from_raw_parts,
-};
-
-pub fn initialize() -> Result<(), HRESULT> {
- let err = unsafe { CoInitializeEx(null(), COINIT_MULTITHREADED.try_into().unwrap()) };
- if err != S_OK && err != S_FALSE {
- // S_FALSE just means COM is already initialized
- Err(err)
- } else {
- Ok(())
- }
-}
-
-pub struct ComPtr<T>(*mut T)
-where
- T: Interface;
-impl<T> ComPtr<T>
-where
- T: Interface,
-{
- /// Creates a `ComPtr` to wrap a raw pointer.
- /// It takes ownership over the pointer which means it does __not__ call `AddRef`.
- /// `T` __must__ be a COM interface that inherits from `IUnknown`.
- pub unsafe fn from_raw(ptr: *mut T) -> ComPtr<T> {
- assert!(!ptr.is_null());
- ComPtr(ptr)
- }
- /// For internal use only.
- fn as_unknown(&self) -> &IUnknown {
- unsafe { &*(self.0 as *mut IUnknown) }
- }
- /// Performs `QueryInterface` fun.
- pub fn cast<U>(&self) -> Result<ComPtr<U>, i32>
- where
- U: Interface,
- {
- let mut obj = null_mut();
- let err = unsafe { self.as_unknown().QueryInterface(&U::uuidof(), &mut obj) };
- if err < 0 {
- return Err(err);
- }
- Ok(unsafe { ComPtr::from_raw(obj as *mut U) })
- }
-}
-impl<T> Deref for ComPtr<T>
-where
- T: Interface,
-{
- type Target = T;
- fn deref(&self) -> &T {
- unsafe { &*self.0 }
- }
-}
-impl<T> Clone for ComPtr<T>
-where
- T: Interface,
-{
- fn clone(&self) -> Self {
- unsafe {
- self.as_unknown().AddRef();
- ComPtr::from_raw(self.0)
- }
- }
-}
-impl<T> Drop for ComPtr<T>
-where
- T: Interface,
-{
- fn drop(&mut self) {
- unsafe {
- self.as_unknown().Release();
- }
- }
-}
-pub struct BStr(BSTR);
-impl BStr {
- pub unsafe fn from_raw(s: BSTR) -> BStr {
- BStr(s)
- }
- pub fn to_osstring(&self) -> OsString {
- let len = unsafe { SysStringLen(self.0) };
- let slice = unsafe { from_raw_parts(self.0, len as usize) };
- OsStringExt::from_wide(slice)
- }
-}
-impl Drop for BStr {
- fn drop(&mut self) {
- unsafe { SysFreeString(self.0) };
- }
-}