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📁 formContainer for delphi,是一个delphi form动画现实的组件
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<h3>Transition effects guide</h3>

<p>To show your standard Forms with a transition effect just put a <a href="teform.htm">FormTransitions</a>
component into them.</p>

<p>When <a href="fcguide.htm#To use a transition">using transitions directly with
FormContainer</a> you only have to use the transition properties to configure it at your
pleasure and pass it to the <a href="FormCont.htm#ShowFormEx">ShowFormEx</a> procedure.
FormContainer will make the rest. But in order to use them with other controls you'll need
to call some functions to make it work.</p>

<p>All transitions derive from <a href="transeff.htm">TTransitionEffect</a>. They are a
class hierarchy, not components. To use a transition you have to create, configure,
execute and destroy it:</p>

<pre>	var
	  Transition: TPushTransition;
	begin
	  Transition := TPushTransition.Create;
	  try
	    Transition.Milliseconds := 1000;
	    Transition.Prepare(MyControl, MyControl.ClientRect);

	    // Make changes to the visual appearance of MyControl or its childs...

	    Transition.Execute;
	  finally
	    Transition.Free;
	  end;
	end;</pre>

<p>When you call <a href="transeff.htm#Prepare">Prepare</a> the transition object '<a
href="transeff.htm#Freeze">freezes</a>' the given area owned by <em>MyControl</em> (a
controls owns its window area except those areas owned by other windows that are in front
of it and are not its childs). This area will be given in client coordinates if
ClientCoordinates is <em>True</em>. This way you can make changes that affect to that area
without refreshing the screen. Once you have finished with your changes (trying to be
brief) call <a href="transeff.htm#Execute">Execute</a> and the actual aspect of the
component will be showed applying the given transition effect.</p>

<p>You can control if the transition will be direct or it will have two passes with the <a
href="transeff.htm#PassSetting">PassSetting</a> property. Set it to <a
href="passet.htm#teOnePass">teOnePass</a> if you always want a direct transition (you have
to verify it in 256 colors video mode, because you can have a palette conflict). To always
have two passes set it to <a href="passet.htm#teTwoPasses">teTwoPasses</a>. If you have
palette conflicts set it to <a href="passet.htm#tePaletteDependent">tePaletteDependent</a>
because this way you will have one pass under real color video modes, and two passes under
256 colors video mode. To know at run-time if you will have one or two passes use the
function <a href="transeff.htm#Passes">Passes</a>. The configuration of the second pass is
controlled by the <a href="transeff.htm#Pass2Options">Pass2Options</a> property. </p>

<p>When using two passes and the <a href="pass2.htm#UseSolidColor">UseSolidColor</a>
property of <a href="transeff.htm#Pass2Options">Pass2Options</a> is <em>False</em> you
have to call <a href="transeff.htm#Prepare2ndPass">Prepare2ndPass</a> to 'take the photo'
of the intermediate image. For example:</p>

<pre>	Transition.Prepare(MyControl, MyControl.ClientRect);

	// Make some changes to the visual appearance of MyControl or its childs...

	Transition.Prepare2ndPass;

	// Make the definitive changes to the visual appearance of MyControl or its childs...

	Transition.Execute;</pre>

<p>If you need more control you can <a href="transeff.htm#Freeze">Freeze</a> the area
before calling <a href="transeff.htm#Prepare">Prepare</a> (see unit About.pas in the Demo
project for an example of using it). You can also force the rendering of the source image
setting <a href="transeff.htm#ForceRendering">ForceRendering</a> to <em>True</em>. <a
href="transeff.htm#Reversed">Reversed</a> controls if the transition will be applied 'as
is' or with the opposite configuration.</p>

<p>You can disable a transition setting its <a href="transeff.htm#Enabled">Enabled</a>
property to <em>False</em> and even disable all transitions at once setting <a
href="globdisa.htm">TEGlobalDisabled</a> to <em>True</em>. A disabled transition will
perform as a <a href="flicker.htm">FlickerFree</a> transition if the <a
href="transeff.htm#FlickerFreeWhenDisabled">FlickerFreeWhenDisabled</a> property is set to
<em>True</em>. Otherwise it will be simply ignored.</p>

<p>Transitions have two events to allow synchronization with your code: <a
href="transeff.htm#OnStartTransition">OnStartTransition</a> and <a
href="transeff.htm#OnEndTransition">OnEndTransition</a>. The demo project shows how to use
them to synchronize a transition with a sound effect.</p>
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