生成 DLL 转发的函数。
先在 Cargo.toml 中添加依赖：
toml
[build-dependencies]
forward-dll = "0.1.11"
在 build.rs 中添加如下代码：
```rust use forwarddll::forwarddll;
fn main() { forward_dll("C:\Windows\System32\version.dll").unwrap(); } ```
rust
use forward_dll::forward_dll_with_exports;
forward_dll_with_exports(
"C:\\Windows\\system32\\version.dll",
&[
(1, "GetFileVersionInfoA"),
(2, "GetFileVersionInfoByHandle"),
(3, "GetFileVersionInfoExA"),
(4, "GetFileVersionInfoExW"),
(5, "GetFileVersionInfoSizeA"),
(6, "GetFileVersionInfoSizeExA"),
(7, "GetFileVersionInfoSizeExW"),
(8, "GetFileVersionInfoSizeW"),
(9, "GetFileVersionInfoW"),
(10, "VerFindFileA"),
(11, "VerFindFileW"),
(12, "VerInstallFileA"),
(13, "VerInstallFileW"),
(14, "VerLanguageNameA"),
(15, "VerLanguageNameW"),
(16, "VerQueryValueA"),
(17, "VerQueryValueW"),
],
)
.unwrap();
```rust use forward_dll::ForwardModule;
pub struct VersionModule;
const VERSION_LIB: VersionModule = VersionModule;
pub extern "system" fn DllMain(inst: isize, reason: u32, _: *const u8) -> u32 { if reason == 1 { println!("==> version.dll loaded"); VERSIONLIB.init().unwrap(); println!("==> version.dll initialized"); } 1 } ```
注意，#[forward(target = "path/of/your/dll")] 中的路径，应在编译期可以访问到（过程宏会读取这个文件并提取出导出表），如果这个路径为相对路径，则应相对于 Cargo.toml 所在的目录。
```rust forwarddll::forwarddll!( "C:\Windows\system32\version.dll", DLLVERSIONFORWARDER, GetFileVersionInfoA GetFileVersionInfoByHandle GetFileVersionInfoExA GetFileVersionInfoExW GetFileVersionInfoSizeA GetFileVersionInfoSizeExA GetFileVersionInfoSizeExW GetFileVersionInfoSizeW GetFileVersionInfoW VerFindFileA VerFindFileW VerInstallFileA VerInstallFileW VerLanguageNameA VerLanguageNameW VerQueryValueA VerQueryValueW );
pub extern "system" fn DllMain(inst: isize, reason: u32, _: *const u8) -> u32 { if reason == 1 { // 这里要自行持有底层的 version.dll 的句柄，防止被释放。 let _ = forwarddll::utils::loadlibrary("C:\Windows\system32\version.dll"); // 调用 forwardall 方法，建立导出函数与目标函数之间的映射关系。 let _ = unsafe { DLLVERSIONFORWARDER.forward_all() }; } 1 } ```
powershell
cargo build -p version; cargo run -p just-call-version
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