CODEWITHSUNDEEP
delphidelphi-7
zig
zig

Reputation: 4624

How can I create my own custom Hint for a specific control?

I need to create a custom hint window (with it's own color and layout) for a specific control (not the entire application)

The hint text itself will not be connected to that specific Hint property control.

As suggested I wrote a handler for CM_HINTSHOW (This worked if the Control has ShowHint=True):

procedure TMyControl.CMHintShow(var Message: TMessage);
begin
  Form1.caption := 'x';
  // Here I will display my own Hint window 
  // inherited;
end;

But now, how do I know when/where to hide it when the hint times out? neither CM_HINTSHOW or CM_HINTSHOWPAUSE gives me this info.

Upvotes: 2

Views: 2741

Answers (1)

Remy Lebeau
Remy Lebeau

Reputation: 595827

In your CM_HINTSHOW message handler, you can cast the lParam value to a PHintInfo pointer and then customize its fields as needed. For instance, to simply change the background color, set the THintInfo.HintColor field. To change the layout of the hint, you can derive a new class from THintWindow and assign that class type to the THintInfo.HintWindowClass field.

Let the VCL manage the hint for you, including showing and hiding it.

Upvotes: 6

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