Mega Code Archive
Using custom cursors
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Title: Using custom cursors
Question: How can I use custom cursors in my application?
Answer:
To use custom cursors in your application you have to follow these
steps:
1. Create the cursors and save them in a resource file. You can use
the Image Editor that comes with Delphi for this purpose.
2. In the interface section of any unit of your project declare the
constants to refer to your cursors in code. This is not required,
but it will improve the readability of your code, so it is higly
recommended.
These constans must be possitive integers (0 and negative values
are reserved for the standard cursors). For example:
const
crFinger = 1;
crPower = 2;
3. In the initialization section of this unit, or anywhere in your
project before you attempt to use your cursors, you have to load
the cursors from the resource file. For example:
{$R Cursors.res}
Screen.Cursors[crFinger] := LoadCursor(hInstance, 'FINGER');
Screen.Cursors[crPower] := LoadCursor(hInstance, 'POWER');
Here we assumed "Cursors.res" is the resource file where you saved
your cursors, and that FINGER and POWER are the names you saved
them under.
This is it. You can use these cursors in the same you would use the
predefined cursors. For example:
procedure TForm1.FormCreate(Sender: TObject);
begin
Self.Cursor := crPower;
Label1.Cursor := crFinger;
end;
You can also set the Cursor and DragCursor properties of a component
at design-time using the Object Inspector. The only drawback is that
you can't use the constants names (for example crFinger and crPower)
but their values (for example 1 and 2).
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