1. Input and Output Interfaces
Chapter 4
Input and Output Interfaces
Windows Programming, C.-S. Shieh, KUAS EC, 2005

2. Windows Programming, C.-S. Shieh, KUAS EC, 2005
VCL Components
We concern VCL components’
Properties
Design Time, Run-Time Only
Methods
Events
Make good use of online help.
Get third-party VCL components.
Windows Programming, C.-S. Shieh, KUAS EC, 2005

3. Windows Programming, C.-S. Shieh, KUAS EC, 2005
VCL Components (cont)
4.1 TForm
4.2 TLabel
4.3 TButton
4.4 TEdit
Windows Programming, C.-S. Shieh, KUAS EC, 2005

4. Windows Programming, C.-S. Shieh, KUAS EC, 2005
TMemo
Prosperities
Lines (TStrings)
Methods
Clear()
Windows Programming, C.-S. Shieh, KUAS EC, 2005

5. Windows Programming, C.-S. Shieh, KUAS EC, 2005
TStrings
Methods
Add(), SaveToFile(), LoadFromFile()
Windows Programming, C.-S. Shieh, KUAS EC, 2005

6. Windows Programming, C.-S. Shieh, KUAS EC, 2005
TCanvas
Properties
Font (TFont)
Methods
TextOut()
Windows Programming, C.-S. Shieh, KUAS EC, 2005

7. Windows Programming, C.-S. Shieh, KUAS EC, 2005
TFont
Properties
Size (int), Color (TColor)
Windows Programming, C.-S. Shieh, KUAS EC, 2005

8. Windows Programming, C.-S. Shieh, KUAS EC, 2005
Useful Functions
Time(), Date()
StrToInt(), StrToFloat()
IntToStr(), FloatToStr()
ShowMessage()
InputBox()
Application->MessageBox()
Windows Programming, C.-S. Shieh, KUAS EC, 2005