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API Dictionary - Search API, Constants, Types, Sub, Functions

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Library : user32.dll  Category : _CategoryNotSet


Api Example(s)
  Add an horizontal scrollbar to a ListBox control
  Change the width of the dropdown portion of a ComboBox
  Cut, copy, and paste using API functions
  Determine the current line in a multiline TextBox control
  Dragging caption-less forms
  Ensure that a TextBox caret is visible
  Extended user interface for combo boxes
  Get the handle of the edit portion of a ComboBox
  Implement a MaxLength property for the ComboBox control
  Incremental searches within list boxes
  Open the list portion of a ComboBox control
  Read and modify a TextBox control's formatting rectangle
  Set tab stop positions for a multiline TextBox control
  The first visible line in a multiline TextBox control
  The number of lines in a multiline TextBox control
  Undo changes in a TextBox control
  Use a ListBox as a poor man's grid
  Use DataChanged with unbound controls
  Determine the number of visible items in a ListView control
  Get full control on the text typed in a ListView's item
  Get full control on the text typed in a TreeView's node
  Get or Set the height of TreeView nodes
  Limit the length of an item in a ListView control
  Limit the length of the text in a TreeView node
  Selecting an entire row in a ListView
  Insert a picture into a RichTextBox control
  Let the user add tab characters to a RichTextBox control
  Hide the Automation Manager
  Extract null-delimited strings
  ArrayToListbox - Add an array of strings to a ListBox or ComboBox
  ComboBoxGetDroppedControlRect - Get the size of a ComboBox dropped rectangle
  DuplicateComboBox - Fast copy of the contents of a ComboBox control
  DuplicateListBox - Fast copy of the contents of a ListBox control
  GetListBoxSelectRange - Retrieve the index of all the selected items in a ListBox
  GetListItemHeight - Return the height of a ListBox or ComboBox item
  ListBoxFindString - Search an item in a ListBox or ComboBox control
  ListBoxItemFromPoint - The index of a ListBox item at given coordinates
  ListBoxSelectRange - Select or unselect a range of elements in a ListBox
  ListBoxVisibleItems - The number of visible items in a ListBox control
  SetListItemHeight - Change the height of items in a ListBox or ComboBox control
  TextBoxGetLine - Return a single line in a multiline TextBox control
  TextBoxGetLineColumn - Get caret position in a multiline TextBox control
  TextBoxGetLines - Get an array with individual lines in a TextBox control
  TextBoxScroll - Programmatically scroll a multi-line TextBox control
  CTreeViewEdit - A class for enhanced treeview node editing
  GetTreeViewFirstVisibleNode - Retrieve the first visible node in a TreeView
  GetTreeViewNodeHandle - The handle of any node in a TreeView
  GetTreeViewNodeRect - The bounding rectangle of a TreeView's node
  GetTreeViewSelNodeHandle - The handle of a TrewView's selected node
  ListViewScroll - Scroll a ListView control horizontally or vertically
  ListViewVisibleItems - The number of visible elements in a ListView control
  SetTreeViewBackColor - Change the background color of a TreeView control
  SetTreeViewFirstVisibleNode - Set the first visible node in a TreeView control
  SetRichTextBoxWordWrap - Set the WordWrap style of a RichTextBox control
  Moving a Window Without a Titlebar
  CloseDosWindow - Close a Ms-Dos console window
  FillWindowsTree - Fill a treeview with the windows hierarchy
  MinimizeAllWindows - Minimize and restore all windows
  How to sort items on the fly as they are added in a ListView using SubClassing
  Printing the contents of a picturebox, including (most) controls, to a printer
  How to Print a Multiline TextBox with Alignment!
  Registering File Associations and Passing Command Line Parameters to an Existing App Instance
  Tile a Bitmap Into a TextBox Background
  Change The Width of Items in a Listbox
  Use .NET Forms as Popup Windows
  Font ComboBox
  Virtual ListBox
  Adding an Icon or Control to a TextBox or ComboBox
  Receiving and Using Clipboard Change Notifications
  Presenting a Non-Selectable 'No Data' Picture in a ListBox
  Disabling the Combo Edit Box
  Simulating 'MaxLength' in a Combo's Edit Box
  Duplicating List Contents to Another List or Combo Using SendMessage
  Filling a Combo with Files, Directories and Drives
  Changing Colours of a VB ProgressBar
  Autosizing ListView Columns via API
  Customizing the ListView's Appearance via API
  Determining a ListView's Visible Item Count
  How to Automatically Select (Track) a ListView Item
  How to Add Checkboxes to a ListView
  How to Change the ListView Header Style
  How to Determine Selected ListItems
  How to Determine Re-Ordered Column Positions in a ListView
  How to Display Grid Lines in a ListView
  How to Programmatically Select and Deselect All ListItems
  How to Reorder ListView Columns Programmatically
  How to Select the Entire Row in a ListView
  Hooking the Open & Save Common Dialogs To Manipulate Components
  A class to put a ProgressBar into a StatusBar
  Setting Custom Paper Size using Printer API
  How to Autosize ListView columns ?
  How to disable form's Close button (X)?
  How to set default printer programatically on Win 9x/NT ?
  Move Form without title bar (2 different methods)
  Redirect command line output to textbox using CreatePipe API
  Realtime Clipboard viewer (Subclassing technique)
  Working with Resource file
  WMI : Retrive extended information about processor
  How to retrive only visible items of treeview control?
  CBalloonToolTipNotify: Class for System tray icon, Balloon tooltip, simple tooltip and Popup menu
  How to get character index from cursor position in textbox/richtextbox control.

API Description :
The SendMessage function sends the specified message to a window or windows. The function calls the window procedure for the specified window and does not return until the window procedure has processed the message. The PostMessage function, in contrast,


VB Declaration :

Show Multiline        Public  Private

Parameters :
Return :
OS Requirement :
Requires Windows NT 3.1 or later
Requires Windows 95 or later
Dotnet Replacement :
Any of the following: System.Windows.Forms.Control.DefWndProc System.Windows.Forms.Control.WndProc System.Windows.Forms.Form.DefWndProc System.Windows.Forms.Form.WndProc

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