Change system colors

Private Declare Function SetSysColors Lib "user32" (ByVal nValues As Long, lpSysColor As Long, lpColorValue As Long) As Long
Private Const COLOR_SCROLLBAR = 0
Private Const COLOR_BACKGROUND = 1
Private Const COLOR_ACTIVECAPTION = 2
Private Const COLOR_INACTIVECAPTION = 3
Private Const COLOR_MENU = 4
Private Const COLOR_WINDOW = 5
Private Const COLOR_WINDOWFRAME = 6
Private Const COLOR_MENUTEXT = 7
Private Const COLOR_WINDOWTEXT = 8
Private Const COLOR_CAPTIONTEXT = 9
Private Const COLOR_ACTIVEBORDER = 10
Private Const COLOR_INACTIVEBORDER = 11
Private Const COLOR_APPWORKSPACE = 12
Private Const COLOR_HIGHLIGHT = 13
Private Const COLOR_HIGHLIGHTTEXT = 14
Private Const COLOR_BTNFACE = 15
Private Const COLOR_BTNSHADOW = 16
Private Const COLOR_GRAYTEXT = 17
Private Const COLOR_BTNTEXT = 18
Private Const COLOR_INACTIVECAPTIONTEXT = 19
Private Const COLOR_BTNHIGHLIGHT = 20
Private Sub Form_Load()
'you now have ablue desktop ;-)
X = SetSysColors(1, COLOR_BACKGROUND, &HFF0F00)
End
End Sub

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Visual Basic-6 has emerged as one of the standard Windows Programming Language and it has become a must for all Software people for developing Applications in Visual Environment. So it is, one must learn Visual Basic-6.

What is our Objective in this Courseware?

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Visual Basic-6 has its origin in Basic which was developed round about the year 1960, when high level languages were just being introduced to the computer community. Microsoft has made it extremely powerful by gearing all its good features to the Windows environment. Starting with the version 3 and then with 4, and then with 6, Visual Basic is now at version 6. Basic is a Procedure Oriented Language intended to implement single tasks in text based environment whereas Visual Basic is an Event Driven Language intended to implement Projects or Applications containing multiple tasks in Windows Environment.

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Structure of VB-6 Projects:

We said earlier that VB-6 implements projects or applications. A project is developed using one or more Forms. A Form is simply a window containing one or more Controls. Controls in VB consist of labels, text boxes, list boxes, combo boxes, scroll bars etc. which are the constituents of windows environment. It is only the controls that give VB, its immense power and so there is a lot of interest in creating more and more powerful controls. ActiveX controls mark a significant development in controls technology. In fact all controls in VB-6 are ActiveX controls, which have the extension .ocx. These controls have properties whose values can be initialized at design time and also varied during run time. The properties are something like variables. The controls are activated by codes written in a high level language. By associating our problem variables with the properties of the controls, our problem variables can be manipulated to give the problem solution. In summary we can say that a VB project is made of forms, controls and their properties and codes.

Integrated Development Environment:

The working environment in VB is often referred to as the Integrated Development Environment or IDE, because it integrates many different functions such as design, editing, compiling and debugging within a common environment. Since all our projects are developed only in the IDE, let us now have a brief look at its features. You will be able to understand their uses at the time of building projects. The VB IDE looks as shown in the figure.