How can you tell the amount of data contained in a TMemo component?

How do you tell the amount of data contained in aTMemo component? Delphi1 has a finite TMemo limit and I want to check the available size beforeadding new text. If the TMemo is too close to thelimit, I can remove the first line and manage it asa kind of big buffer.

You could do something like this:

function GetTotalTextLength(var MyMemo : TMemo) : LongInt;begin  {Lock all screen updates to prevent flickering}  LockWindowUpdates(Parent.Handle);  with MyMemo do begin    SelectAll;    Result := SelLength;    SelStart := 0;    SelLength := 0;  end;  LockWindowUpdates(0);end;
What’s happening above is that the screen is locked so that no updates canbe made during the course of the function’s run. Then all the text isselected in the memo with the SelectAll method. The length of the selectedtext (SelLength) is then assigned to the function’s Result, then the cursoris moved to the beginning of the memo. After that, LockWindowUpdate iscalled with a zero-value handle, to unlock the screen.Conceivably, this _should_ give you the length of the total text. I haven’ttried this myself, but it should work. And if not, then just play with it.The idea is to select all the text, then get the length. You might even trydoing this:
str := Memo1.Text;TextLength := Length(str);str := ”;
However, this will take up resources.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS