If you are writing an application in which you don’t know the class of an object until runtime, then you cannot use the new operator to instantiate the object. This

The assert macro can be used to detect errors as soon as they occur. This macro is defined in the include file , and is used that way: assert (expression)

Use the following code: Public Function IsLeapYear(iYearToCheck As Integer) As BooleanIsLeapYear=IsDate(Format( Related Posts Schools across Lancashire hit by ransomwareAI: a double-edged sword in cybersecuritySurvey: Developer Adoption of Windows 10 Climbs

Put the control(s) in a frame and disable the frame. This will even eliminate graying out or color changes. Related Posts Dutch Developers Get Paid MoreGetting the Last ID in

In C++, this can be achieved by throwing an exception from your Constructor. Since Constructors cannot return a value, this is the only way to achieve error handling. Class MyClass{

If your program uses the WebBrowser control or any Microsoft Internet Control, you must ensure (and clearly specify in your app’s documentation) that the program can only work on systems

A simple way to add some pizazz to your forms is by minimizing them and then closing them, instead of making them disapper istantaneously. Just try this code: Private Sub

Private Declare Function SendMessage Lib “user32” Alias “SendMessageA” (ByVal _ hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, _ lParam As Any) As LongPrivate Const WM_USER As

In some cases you might want to activate a form given its name, but VB doesn’t let you do it directly. However, it is easy to create a function that

Copying and pasting text and images programmatically isn’t difficult at all, using the methods of the Clipboard object. However, implementing a generic Edit menu that copies and pastes the highlighted

If a form contains a RichTextBox control and other controls that are capable to receive the input focus, when the focus is on the RichTextBox and the user presses the

‘ Open a single pane Explorer window’ sRoot is the root folder to open’ bUpwardAllowed specifies whether the user will be allowed to navigate ‘ upward the root” Example:’ OpenSinglePaneExplorer

Private Type PRINTER_INFO_2 pServerName As String pPrinterName As String pShareName As String pPortName As String pDriverName As String pComment As String pLocation As String pDevMode As Long pSepFile As String

Private Declare Function SetFileAttributes Lib “kernel32” Alias _ “SetFileAttributesA” (ByVal lpFileName As String, ByVal dwFileAttributes As _ Long) As Long’ Associate an icon to a folder, by creating a desktop.ini

‘ Load the specified REG file in the registryPrivate Sub ApplyRegFile(ByVal sRegFile As String) On Error Resume Next ‘first of all, check if the file exists If Not (GetAttr(sRegFile) And

Private Const HKEY_CLASSES_ROOT = &H80000000Private Const HKEY_CURRENT_CONFIG = &H80000005Private Const HKEY_CURRENT_USER = &H80000001Private Const HKEY_LOCAL_MACHINE = &H80000002Private Const HKEY_USERS = &H80000003’Save the specified registry’s key and (optionally) its subkeys to

Private Declare Function RegOpenKeyEx Lib “advapi32.dll” Alias “RegOpenKeyExA” _ (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, _ ByVal samDesired As Long, phkResult As Long) As

This script creates a report of all user owned tables and their columns with data types and nullability information. SET HEADING OFFSET LINESIZE 400SET PAGESIZE 1000BREAK ON TABLE_NAME SKIP 3SPOOL

Use this code: CONVERT(datetime, FLOOR(CONVERT(float, ))) Related Posts Should You Put Much Stock in App Reviews?Tip: Enable SQL Server to Run Stored Procedures at StartupOncoNPC: AI Cancer Detector?Musk’s xAI raises

PostThreadMessage is a Win32 API used to post messages to threads. Usually, the message posted is a standard windows message with the window handle set to NULL.When PostThreadMessage is used

Global variables can lead to problems that are difficult to debug. It is very easy, for instance, to accidentally access a global variable from a function when you think you

Private Type OSVERSIONINFO dwOSVersionInfoSize As Long dwMajorVersion As Long dwMinorVersion As Long dwBuildNumber As Long dwPlatformId As Long szCSDVersion As String * 128End TypePrivate Declare Function GetVersionEx Lib “kernel32” Alias

There are fundamental incompatibilities between the ways AWT and Swing draw themselves. Swing classes are pure Java classes that look the same on all operating systems. AWT Java classes are

OBJECT_NAME is a module level constant and ‘PROC_NAME is a procedure level constant. You need these because not all objects know their own names, and procedures certainly don’t. Use the

The java.net.URLDecoder class has a static method to perform this decoding. The following code fragment resides in the doGet() or doPost() method of a servlet. The variable request is a

The same code can be used for debugging either in development or in production environments. To do so include the following subroutine in the module: Private Sub ShowMessage(msg As String)