Question

我希望能够从其句柄中获取程序图标（从User32.dll获取EnumWindow / FindWindow），我知道ExtractAssociatedIcon但我相信这可以从文件而不是句柄中运行。这个问题可能是如何将Handle转换为要转换为Icon的文件位置。

我的意图是通过node-ffi将此代码移植到JavaScript，以便在node-hide中使用，我的npm模块用于隐藏和显示Windows程序。使用DLL将是最简单的，但C / C＃解决方案将起作用。我只是在寻求指导，谢谢。

Answer 1

在C＃中，您可以使用// Required namespaces. using System; using System.Drawing; using System.Reflection; using System.Runtime.InteropServices; // Import the function. [DllImport("shell32.dll", EntryPoint="ExtractAssociatedIcon")] public static extern IntPtr ExtractAssociatedIcon(IntPtr hInst, string lpIconPath, out ushort lpiIcon); // Now get the icon. ushort uicon; IntPtr handle = ExtractAssociatedIcon(this.Handle, Assembly.GetExecutingAssembly().Location, out uicon); Icon ico = Icon.FromHandle(handle);功能。

代码：

public class MainActivity extends AppCompatActivity  {

public static final String AVATAR_URL = "http://lorempixel.com/200/200/people/1/";


private DrawerLayout drawerLayout;
private View content;
private Toolbar toolbar;
private NavigationView navigationView;
private ActionBarDrawerToggle drawerToggle;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dashboard);
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    initToolbar();
    setupDrawerLayout();

    content = findViewById(R.id.content);
    drawerToggle = setupDrawerToggle();
    final ImageView avatar = (ImageView) navigationView.getHeaderView(0).findViewById(R.id.avatar);
    Picasso.with(this).load(AVATAR_URL).transform(new CircleTransform()).into(avatar);


}


private void initToolbar() {
    final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    final ActionBar actionBar = getSupportActionBar();

    if (actionBar != null) {
        actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp);
        actionBar.setDisplayHomeAsUpEnabled(true);
    }
}
private ActionBarDrawerToggle setupDrawerToggle() {
    return new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open,  R.string.drawer_close);
}

   @Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    // Sync the toggle state after onRestoreInstanceState has occurred.
    drawerToggle.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    // Pass any configuration change to the drawer toggles
    drawerToggle.onConfigurationChanged(newConfig);
}
 private void setupDrawerLayout() {

    drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    navigationView = (NavigationView) findViewById(R.id.navigation_view);

    navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

        @Override
        public boolean onNavigationItemSelected(MenuItem menuItem) {

            int id = menuItem.getItemId();

          switch (id) {
                case R.id.drawer_home:
                    Intent i = new Intent(getApplicationContext(), MainActivity.class);
                    startActivity(i);
                    finish();
                    break;
                case R.id.drawer_favorite:
                    Intent j = new Intent(getApplicationContext(), SecondActivity.class);
                    startActivity(j);
                    finish();
                    break;

            }


        return true;
    }
});

从句柄获取程序的图标

1 个答案: