Visual Basic’s documentation does not explain how to specify more than just one conditional compilation constant in the Advanced tab of the Options dialog. The correct way is using a
Private Declare Function GetSystemDirectory Lib “kernel32” Alias _ “GetSystemDirectoryA” (ByVal lpBuffer As String, _ ByVal nSize As Long) As Long ‘ The path of the System directoryFunction SystemDirectory() As String
In the Show event of a form you might be tempted to use SetFocus to select which field the end user should begin working with. However, this method raises an
While Visual Basic offers the Hex$ function that converts a decimal value into its hexadecimal equivalent number, it seems that the inverse function is missing. Not true. Try out this
The Tag property exposed by many Windows Common Controls (including TreeView’s Node objects and ListView’s ListItem objects) is more versatile than the ListBox and ComboBox controls’ ItemData property, because it
Any action that affects a form’s size or position should be inhibited when the form is minimized or maximized, because this causes a runtime error 384. Always double check your
At times it might be convenient to know how a given control got the focus, namely by means of the Tab key, an associated hotkey or a click of the
Visual Basic lets you test the state of mouse buttons only inside a MouseDown, MouseMove, or MouseUp event procedure. To determine the current state of mouse buttons you can use
Private Declare Function GetComputerName Lib “kernel32” Alias _ “GetComputerNameA” (ByVal lpBuffer As String, nSize As Long) As Long’ Returns the name of the computer.Function ComputerName() As String Dim buffer As