![]() A Drawer in our nomenclature (an instance of the TCDDrawer class) is similar to a theme rendering engine or suchlike. Each control instance has a Drawer connected to it. Customdrawncontrols.pas provides the code which processes all the control's keyboard and mouse events, implementing all the mouse and key response behaviour. The code of the controls itself is implemented in the unit customdrawncontrols.pas, but this unit has no drawing code at all. The basic programming technique utilized by this set of controls is explained at the Developing with Graphics#Create a custom control which draws itself page. It is important to note that styles are only available if you add the corresponding unit of the style to the uses clause. Note that currently only the Win2000 drawer is in the LCL, so any other drawers need to be obtained from the package customdrawn.lpk To only create customdrawn components by code one can simply add customdrawncontrols, customdrawndrawers and customdrawn_common to the uses clause, declare them and use them. To be able to use them in the Lazarus GUI designer install the package lazarus/components/customdrawn.lpk 8 Other good custom drawn components for Lazarus.6 Controls which imitate the Common Controls Palette.5 Controls which imitate the Additional Palette.4 Controls which imitate the Standard Palette.
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