whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1541)

Database (90)
Files (137)
Forms (107)
Graphic (114)
IDE (21)
Indy (5)
Internet / LAN (130)
IntraWeb (0)
Math (76)
Misc (126)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (266)
VCL (242)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

49 Visitors Online


 
...UNDO in memo fields?
Autor: Simon Grossenbacher
Homepage: http://www.swissdelphicenter.ch
[ Print tip ]  

Tip Rating (6):  
     




// You can undo with the following code:
// So kann man den letzten Bearbeitungsschritt rückgängig machen:

Memo1.Perform(EM_UNDO, 0, 0);

// To Detect if Undo imformation is available:
// Testen, ob eine Rückgängig-Operation möglich ist:

ButtonUndo.Enabled := Memo1.Perform(EM_CANUNDO, 0, 0);
ButtonUndo.Enabled := Memo1.CanUndo; // in Delphi 4 or higher

// To clear the Undo buffer:
// Den Textpuffer für Rückgängig löschen:

Memo1.Perform(EM_EMPTYUNDOBUFFER, 0, 0);

Memo1.ClearUndo; // in Delphi 4 or higher

 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners