You can set password when you save a file in GstarCAD. The method is following:
In "Save Drawing As" dialog box, press "Tools" button then choose "security options". In "security options" dialog you can set password for your file.
Use hopen command or use GstarCAD backup file manager to open, the dwh file will be saved as dwg file after you open it. See related link.
The font file that displays the character doesn't exist in GstarCAD. You can change it into other font file or copy this font file to font library.
Use the function of GstarCAD - "Start>Export OCF file".
GstarCAD can export: DWG, DWF, PDF, WMF, BMP, EMF, SVG and OCF file formats. You can also open and save DXF, JPEG, TIF, PNG, GIF file formats.
YES
.dwg is the default drawing format of GstarCAD; at present, GstarCAD is compatible with ever version of .dwg and .dxf files from 2.5 to 2010, it is means GstarCAD is compatible from AutoCAD 2.5 to AutoCAD 2012. If you are using AutoCAD 2013, you have to exchange the file with GstarCAD and save it as earlier .dwg version before 2010. By the way, GstarCAD will be compatible with AutoCAD 2013 soon.
Same to other CAD software, GstarCAD can switch drawings by shortcut of Crl+Tab. GstarCAD has a more convenient mode: file tab bar. The names of drawings are displayed on the tabs; you can switch quickly and precisely by click the file names.
File? You can use 3rd party software sucha s TrueCrypt or Kakasoft Folder Protector to encrypt files.
To encrypt a folder or fileRight-click the folder or file you want to encrypt, and then click Properties.Click the General tab, and then click Advanced.Select the Encrypt contents to secure data check box, click OK, and then click OK again.
Yes, when free of charge period expires, the saving function is restricted by GstarCAD, the other functions are still working.
cipher
Try installing and using Truecrypt