virtual display: idd add uninstall && example1

Signed-off-by: fufesou <shuanglongchen@yeah.net>

libs/virtual_display/examples/virtual_display_1.rs

@@ -0,0 +1,89 @@
+use std::io::{self, Read};
+use virtual_display;
+
+fn prompt_input() -> u8 {
+    println!("Press  key          execute:");
+    println!("       1. 'x'       1. exit");
+    println!("       2. 'i'       2. install or update driver");
+    println!("       3. 'u'       3. uninstall driver");
+    println!("       4. 'c'       4. create device");
+    println!("       5. 'd'       5. destroy device");
+    println!("       6. '1'       6. plug in monitor 0,1,2");
+    println!("       7. '4'       7. plug out monitor 0,1,2");
+
+    io::stdin()
+        .bytes()
+        .next()
+        .and_then(|result| result.ok())
+        .unwrap_or(0)
+}
+
+fn plug_in() {
+    println!("Plug in monitor begin");
+    if let Err(e) = virtual_display::plug_in_monitor() {
+        println!("{}", e);
+    } else {
+        println!("Plug in monitor done");
+    }
+}
+
+fn plug_out() {
+    println!("Plug out monitor begin");
+    if let Err(e) = virtual_display::plug_out_monitor() {
+        println!("{}", e);
+    } else {
+        println!("Plug out monitor done");
+    }
+}
+
+fn main() {
+    loop {
+        match prompt_input() as char {
+            'x' => break,
+            'i' => {
+                println!("Install or update driver begin");
+                let mut reboot_required = false;
+                if let Err(e) = virtual_display::install_update_driver(&mut reboot_required) {
+                    println!("{}", e);
+                } else {
+                    println!(
+                        "Install or update driver done, reboot is {} required",
+                        if reboot_required { "" } else { "not" }
+                    );
+                }
+            }
+            'u' => {
+                println!("Uninstall driver begin");
+                let mut reboot_required = false;
+                if let Err(e) = virtual_display::uninstall_driver(&mut reboot_required) {
+                    println!("{}", e);
+                } else {
+                    println!(
+                        "Uninstall driver done, reboot is {} required",
+                        if reboot_required { "" } else { "not" }
+                    );
+                }
+            }
+            'c' => {
+                println!("Create device begin");
+                if virtual_display::is_device_created() {
+                    println!("Device created before");
+                    continue;
+                }
+                if let Err(e) = virtual_display::create_device() {
+                    println!("{}", e);
+                } else {
+                    println!("Create device done");
+                }
+            }
+            'd' => {
+                println!("Close device begin");
+                virtual_display::close_device();
+                println!("Close device done");
+            }
+            '1' => plug_in(),
+            '4' => plug_out(),
+            _ => {}
+        }
+    }
+}