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GetWindowLong

Library : user32.dll  Category : _CategoryNotSet

 

Api Example(s)
  Change a CheckBox or OptionButton style at runtime
  Change the ShowInTaskbar property at runtime
  Determine whether a control has a scrollbar
  Get the handle of the edit portion of a ComboBox
  Make a Checkbox control read-only
  Making a form appear as if it is disabled
  Suppress Max and Min buttons in MDI forms
  How to apply the flat style to a toolbar
  Limit the length of an item in a ListView control
  Limit the length of the text in a TreeView node
  Suppress TreeView's tooltips
  ForceTextBoxCase - Set a textbox's upper/lowercase style
  ForceTextBoxNumeric - Create a numeric Textbox
  IsFormModal - Determines whether a form is modal
  ForceTextBoxNumeric - Force a TextBox control to accept only numeric digits
  SetTreeViewBackColor - Change the background color of a TreeView control
  Get the List of all the Active Tasks
  Window Shapes Using Layering
  Forcing Any Window to Show in the Taskbar
  PopupMenu - Transparent Menu Demonstration
  vbAccelerator MDITabs Control
  Creating drop-down tool windows
  Change The Width of Items in a Listbox
  Show and Hide a Form's Titlebar at run-time
  Floating Controls, Tooltip-style
  Adding an Icon or Control to a TextBox or ComboBox
  How to modify (Add/Remove) System Menu using API ?
  Realtime Clipboard viewer (Subclassing technique)
  CBalloonToolTipNotify: Class for System tray icon, Balloon tooltip, simple tooltip and Popup menu

API Description :
The GetWindowLong function retrieves information about the specified window. The function also retrieves the 32-bit (long) value at the specified offset into the extra window memory of a window.

 

VB Declaration :

Show Multiline        Public  Private

Parameters :
Return :
OS Requirement :
Requires Windows NT 3.1 or later
Requires Windows 95 or later
Dotnet Replacement :
System.ComponentModel.Component.Events System.Windows.Forms.Control.Parent System.Windows.Forms.Form.CreateParams.ExStyle System.Windows.Forms.Form.CreateParams.Style System.Windows.Forms.Form properties


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