In lesson 20, we have learned how to create an audio player. In this lesson, we shall create a picture viewer.This viewer will be able to search for all types of image files your drives and displays them in the picture box.
In this project, you need to insert a ComboBox, a DriveListBox, a DirListBox, a TextBox and a FileListBox into your form. We will briefly explain again the function of each of the above controls.
ComboBox- to display and enable selection of different type of files.
DriveListBox- to allow selection of different drives available on your PC.
DirListBox - To display directories
TextBox - To display selected files
FileListBox- To display files that are available
We need to write codes to coordinate all the above controls so that the application can work properly. The program should flow in the following logical way:
Step 1: The user chooses the type of files he wants to play.
Step2:The user selects the drive that might contains the relevant graphic files.
Step 3:The user looks into directories and subdirectories for the files specified in step1. The files should be displayed in the FileListBox.
Step 4: The user selects the files from the FileListBox and click the Show button.
Step 5: The user clicks on Exit button to end the application.
Private Sub Form_Load() 'To center the player Left = (Screen.Width - Width) \ 2 Top = (Screen.Height - Height)\2 Combo1.Text = "All graphic files" Combo1.AddItem "All graphic files" Combo1.AddItem "All files" End Sub Private Sub Combo1_Change() If ListIndex = 0 Then File1.Pattern = ("*.bmp;*.wmf;*.jpg;*.gif") Else Fiel1.Pattern = ("*.*") End If End Sub 'Specific the types of files to load Private Sub Dir1_Change() File1.Path = Dir1.Path File1.Pattern = ("*.bmp;*.wmf;*.jpg;*.gif") End Sub 'Changing Drives Private Sub Drive1_Change() Dir1.Path = Drive1.Drive End Sub Private Sub File1_Click() If Combo1.ListIndex = 0 Then File1.Pattern = ("*.bmp;*.wmf;*.jpg;*.gif") Else File1.Pattern = ("*.*") End If If Right(File1.Path, 1) <> "\" Then filenam = File1.Path + "\" + File1.FileName Else filenam = File1.Path + File1.FileName End If Text1.Text = filenam< End Sub Private Sub show_Click() If Right(File1.Path, 1)<> "\" Then filenam = File1.Path + "\"+ File1.FileName Else filenam = File1.Path + File1.FileName End If 'To load the picture into the picture box picture1.Picture = LoadPicture(filenam) End Sub