Crate com_shim

COM Shim

Easily write interfaces that can read from COM, without worrying about the underlying functionality (unless you want to!).

Example

use com_shim::com_shim;

com_shim! {
    struct GuiComponent {
        Text: String,
    }
}

com_shim! {
    struct GuiVComponent {
        fn SetFocus(),
    }
}

com_shim! {
    struct GuiTextField: GuiVComponent + GuiComponent {
        CaretPosition: i64,
        DisplayedText: String,
        mut Highlighted: bool,

        fn GetListProperty(String) -> GuiComponent,
    }
}

fn main() {
    // The following call now would trigger a COM call:
    // let a: GuiTextField;
    // a.get_list_property("property");
}

You can also see it implemented in the sap-scripting package.

Macros

com_shim

Generate a COM-compatible class structure.

Structs

GUID

A globally unique identifier (GUID) used to identify COM and WinRT interfaces.

IDispatch

VARIANT

Required features: "Win32_Foundation", "Win32_System_Com", "Win32_System_Ole"

Traits

HasIDispatch

A component that has an IDispatch value. Every component needs this, and this trait guarantees that.

IDispatchExt

Additional functions for working with an IDispatch.

IsA

Indicates that this type is also a parent type and can be upcast to it.

VariantExt

Extension functions for a VARIANT.

VariantTypeExt

Functions to convert to and from a type that can be stored in a VARIANT.

Type Aliases

Result

A specialized Result type that provides Windows error information.