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Handle WM_POINTER* events in favor of WM_TOUCH

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Fixes #975
This commit is contained in:
Kalmár Róbert 2019-07-05 18:37:25 +02:00
parent 93c36ccf78
commit 026b331ba5
4 changed files with 114 additions and 82 deletions
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30
src/platform_impl/windows/dpi.rs
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@ -9,13 +9,12 @@ use winapi::{
winerror::S_OK,
},
um::{
libloaderapi::{GetProcAddress, LoadLibraryA},
shellscalingapi::{
MDT_EFFECTIVE_DPI, MONITOR_DPI_TYPE, PROCESS_DPI_AWARENESS,
PROCESS_PER_MONITOR_DPI_AWARE,
},
wingdi::{GetDeviceCaps, LOGPIXELSX},
winnt::{HRESULT, LPCSTR},
winnt::HRESULT,
winuser::{self, MONITOR_DEFAULTTONEAREST},
},
};
@ -35,33 +34,6 @@ type GetDpiForMonitor = unsafe extern "system" fn(
) -> HRESULT;
type EnableNonClientDpiScaling = unsafe extern "system" fn(hwnd: HWND) -> BOOL;
// Helper function to dynamically load function pointer.
// `library` and `function` must be zero-terminated.
fn get_function_impl(library: &str, function: &str) -> Option<*const c_void> {
assert_eq!(library.chars().last(), Some('\0'));
assert_eq!(function.chars().last(), Some('\0'));
// Library names we will use are ASCII so we can use the A version to avoid string conversion.
let module = unsafe { LoadLibraryA(library.as_ptr() as LPCSTR) };
if module.is_null() {
return None;
}
let function_ptr = unsafe { GetProcAddress(module, function.as_ptr() as LPCSTR) };
if function_ptr.is_null() {
return None;
}
Some(function_ptr as _)
}
macro_rules! get_function {
($lib:expr, $func:ident) => {
get_function_impl(concat!($lib, '\0'), concat!(stringify!($func), '\0'))
.map(|f| unsafe { mem::transmute::<*const _, $func>(f) })
};
}
lazy_static! {
static ref GET_DPI_FOR_WINDOW: Option<GetDpiForWindow> =
get_function!("user32.dll", GetDpiForWindow);