Class: cDbTextEdit
Properties | Events | Methods | Index of Classes
Allows the user to enter and edit text connected to a column in a database table
Hierarchy
cObject > cUIObject > DfBaseObject > DfBaseWindow > DfBaseUIWindow > DfBaseControl > DFBaseTextEdit > cTextEdit > cDbTextEdit_ > cDbTextEditDS_ > cDbTextEdit
Show full hierarchy and direct subclasses
Library: Windows Application Class Library
Package: cDbTextEdit.pkg
Mixins: Extended_DEO_Status_Help_Mixin, Extended_DEO_Status_Help_Tooltip_Mixin, Extended_DEO_Mixin, Extended_DEO_TextEditMixin
Description
The data-aware cDbTextEdit class allows the user to enter and edit text connected to a column in a database table.
The cDbTextEdit class is a data-aware class similar to the cTextEdit class. The cDbRichEdit class is a rich-text (RTF) class similar to the cDbTextEdit class.
The default maximum number of characters for the control is 64 KB (65536 bytes or characters). This can be changed or retrieved via piMaxChars.
Syntax
Use cDbTextEdit.pkg
Object oObjectName is a cDbTextEdit
Set Size to iHeight iWidth
Set Location to iRow iColumn
End_Object
Sample
Object oCustomer_Comments is a cDbTextEdit
Entry_Item Customer.Comments
Set Size to 71 242
Set Location to 9 9
Set peAnchors to anAll
End_Object
To set and get the value of a cDbTextEdit programmatically using Field_Changed_Value and Field_Current_Value, be sure to set pbBypassDDFieldBuffer to False. See DDOs and Extended Field Support for more information.
Current Selection in a Rich Edit Control
The user can select text in a rich edit control by using the mouse or the keyboard. The current selection is the range of selected characters, or the position of the insertion point if no characters are selected. An application can get information about the current selection, set it, determine when it changes, and show or hide the selection highlight.
Word and Line Breaks
A rich edit control calls a function called a word-break procedure to find breaks between words and to determine where it can break lines. The control uses this information when performing word-wrap operations and when processing CTRL+LEFT ARROW key and CTRL+RIGHT ARROW key combinations. An application can send messages to a rich edit control to replace the default word-break procedure, to retrieve word-break information, and to determine what line a given character falls on.
A linefeed (LF) character can be added to text programmatically by adding ASCII character 10 to a string using the character function. A carriage return (CR) character can be added to text programmatically by adding ASCII character 13 to a string using the character function. Either a LF or CR character will break the current line in the control. Also see AppendTextLn.
Text Edit Shortcut Keys
Text edit controls support the following shortcut keys.
| Keys | Operations | Comments |
|---|---|---|
| Shift+Backspace | Generate a LRM/LRM on a bidi keyboardBiDi specific | |
| Ctrl+Tab | Tab | |
| Ctrl+Clear | Select all | |
| Ctrl+Number Pad 5 | Select all | |
| Ctrl+A | Select all | |
| Ctrl+C | Copy | |
| Ctrl+V | Paste | |
| Ctrl+X | Cut | |
| Ctrl+Z | Undo | |
| Ctrl+Y | Redo | |
| Ctrl+' (apostrophe) | Accent acuteAfter pressing the short cut key, press the appropriate letter (for example a, e, or u). This applies to English, French, German, Italian, and Spanish keyboards only. | |
| Ctrl+` (grave) | Accent graveSee Ctrl+' comments. | |
| Ctrl+~ (tilde) | Accent tildeSee Ctrl+' comments. | |
| Ctrl+; (semicolon) | Accent umlautSee Ctrl+' comments. | |
| Ctrl+Shift+6 | Accent caret (circumflex)See Ctrl+' comments. | |
| Ctrl+, (comma) | Accent cedillaSee Ctrl+' comments. | |
| Ctrl+Shift+' (apostrophe) | Activate smart quotes | |
| Backspace | If text is protected, beep and do not delete it. Otherwise, delete previous character. | |
| Ctrl+Backspace | Delete previous word. This generates a VK_F16 code. | |
| F16 | Same as Backspace. | |
| Ctrl+Insert | Copy | |
| Shift+Insert | Paste | |
| Insert | OverwriteDBCS (double-byte character set) does not overwrite. | |
| Ctrl+Left Arrow | Move cursor one word to the left.On bidi keyboard, this depends on the direction of the text. | |
| Ctrl+Right Arrow | Move cursor one word to the right.See Ctrl+Left Arrow comments. | |
| Ctrl+Left Shift | Left alignmentIn BiDi documents, this is for left-to-right reading order. | |
| Ctrl+Right Shift | Right alignmentIn BiDi documents, this is for right-to-left reading order. | |
| Ctrl+Up Arrow | Move to the line above. | |
| Ctrl+Down Arrow | Move to the line below. | |
| Ctrl+Home | Move to the beginning of the document. | |
| Ctrl+End | Move to the end of the document. | |
| Ctrl+Page Up | Move one page up.If in SystemEditMode and Single Line control, do nothing. | |
| Ctrl+Page Down | Move one page down.See Ctrl+Page Up comments. | |
| Ctrl+Delete | Delete the next word or selected characters. | |
| Shift+Delete | Cut the selected characters. | |
| Esc | Stop drag-drop.While doing a drag-drop of text. | |
| Alt+Esc | Change the active application. | |
| Alt+X | Converts the Unicode hexadecimal value preceding the insertion point to the corresponding Unicode character. | |
| Alt+Shift+X | Converts the Unicode character preceding the insertion point to the corresponding Unicode hexadecimal value. | |
| Alt+0xxx (Number Pad) | Inserts Unicode values if xxx is greater than 255. When xxx is less than 256, ASCI range text is inserted based on the current keyboard.Must enter decimal values. | |
| Alt+Shift+Ctrl+F12 | Hex to Unicode.In case Alt+X is already taken for another use. | |
| Alt+Shift+Ctrl+F11 | Selected text will be output to the debugger window and saved to %temp%\DumpFontInfo.txt.For Debug only (need to set Flag=8 in Win.ini) |