Paul Lipscomb
e58f06d9fa
Stripped upstream git history; starting point for replacing the native SWELL/Win32 mapping UI with something more suited to bulk editing. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
30 lines
992 B
Rust
30 lines
992 B
Rust
use libloading::{Library, Symbol};
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use winapi::shared::minwindef::UINT;
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use winapi::shared::windef::HWND;
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/// Provides access to some Win32 API functions that are not available in older Windows versions.
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///
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/// This is better than eagerly linking to these functions because then the resulting binary
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/// wouldn't work *at all* in the older Windows versions, whereas with this approach, we can
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/// fall back to alternative logic or alternative values on a case-by-case basis.
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pub struct DynamicWinApi {
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user32_library: Library,
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}
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impl DynamicWinApi {
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pub fn load() -> Self {
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unsafe {
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Self {
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user32_library: Library::new("user32.dll").unwrap(),
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}
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}
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}
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/// Should be available from Windows 10 onwards.
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pub fn get_dpi_for_window(&self) -> Option<Symbol<GetDpiForWindow>> {
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unsafe { self.user32_library.get(b"GetDpiForWindow\0").ok() }
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}
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}
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type GetDpiForWindow = extern "system" fn(hwnd: HWND) -> UINT;
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