WorldWind Series II: Seizing the thief first 2

4. Parse the parameter args in main (string[] args). The main is to start the program in the console while giving the form of parameters.

//　ParseArgs　may　set　values　that　are　used　elsewhere,
　　　　 //　such　as　startFullScreen　and　CurrentSettingsDirectory.
　　　　 ParseArgs(args);

The parameters in args may be:

"worldwind://": Load positioning to show the sphere somewhere.

"/F": Full screen start.

"/s= ...": Specifies the folder path to load "configuration".

Here to note that the main function is generally no parameters, if we want to write can be in the console to start the program to pass the parameters, you can learn from.

5. Load last used configuration information, including last used WorldWind main form usage information and last used world sphere display information

Load configuration

if(CurrentSettingsDirectory　==　null)
{
//　load　program　settings　from　default　directory
LoadSettings();
World.LoadSettings();
}
else
{
LoadSettings(CurrentSettingsDirectory);
World.LoadSettings(CurrentSettingsDirectory);
}

Here are a few knowledge points to learn:

(1) C # objects are serialized as XML files and deserialized XML files as objects, see: http://www.cnblogs.com/wuhenke/archive/2009/12/10/1621437.html

Deserialization in the Load method of the SettingsBase class:

XmlSerializer　ser　=　new　XmlSerializer(defaultSettings.GetType());
using(TextReader　tr　=　new　StreamReader(fileName))
{
settings　=　(SettingsBase)ser.Deserialize(tr);
settings.m_fileName　=　fileName;　//　remember　where　we　loaded　from　for　a　later　save
}