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Count each non-spaces substring as a word, if it is followed by a space, or if it comes at the end of the string. With this rule, you don’t have to worry about multiple, leading nor trailing spaces
Delphi 7 code example:
suppose your string is in variable S, WordCount and CharCounter are integers, [...]
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If you use a Delphi component like a ListBox, Memo, TreeList, ListView,… and you add or modify a lot of items (lines, nodes,…), the component’s performance becomes very slow. This is due to the fact that after each change, it is redrawn on the screen.
Thus, modifying 10000 items of a ListBox causes 10000 [...]
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To determine which line number the cursor of a Memo component is in, you can use the Windows API function SendMessage. (*API = Application Programmr Interface)
In the example below, the integer variable LineNumber receives the line number that the cursor of Memo1 is in:
LineNumber :=
[...]
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The following code shows how to disable or enable an individual radio button in a TRadioGroup component, the second radio button in our example. Note that the RadioGroup.Controls is a zero based array.
procedure TForm1.Button1Click(Sender: TObject);
begin
TRadioButton(RadioGroup1.Controls[1]). Enabled := False;
end;
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When creating a Delphi component dynamically (a form or whatever other component), in the Create method you have to specify its owner, for example:
Form2 := TForm2.Create(aOwner);
aOwner can be another object or nil (no owner):
- a component with an owner is destroyed automatically, when its owner is destroyed.
[...]
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