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Signals the OnActivate event handler when a form is focused in an application.
Source position: forms.pp line 630
protected procedure TCustomForm.Activate; virtual; |
Activate is a procedure used to signal the OnActivate event handler (if assigned) when the form is focused in an application. Activate is called when the CM_Activate message is handled for the form. It is called after the OnShow event is signalled in the DoShow method.
Activate uses an internal member to determine whether the form is being focused for the first time, or following a change of focus between forms. No actions are performed in the method when the form is being focused for the first time and the WindowState property contains wsMaximized or wsFullScreen.
Use OnShow to respond to the event notification performed when the form is displayed for the first time.
Use OnChangeBounds or OnResize to respond to delayed changes to the form bounds (position) or resize events.
See Deactivate for the actions performed when the form instance loses focus.
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Handler signalled when the form instance receives focus. |
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Handler called when the form becomes visible. |
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Event handler signalled when the size for the form is changed. |
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Handler called when the form is minimized, maximized or restored. |
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Performs actions when the form loses focus. |
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Indicates if the control is visible on its parent. |
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Event handler signalled when the Bounds for the control have been changed. |
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Indicates whether the form is displayed in a minimized, maximized, full-screen or normal state. |
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Event handler signalled when the Bounds for the control have been changed. |
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Notification handler for a resize of the control. |
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