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Test Your Knowledge in Computers #503
Difficulty: Easy
The flow of control (or simply control flow) is how a program processes its instructions.
True or False?
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colorcmd(3u) [bsd man page]

ColorCmd(3U)						    InterViews Reference Manual 					      ColorCmd(3U)

NAME
ColorCmd - command for setting components' color attributes SYNOPSIS
#include <Unidraw/Commands/color.h> DESCRIPTION
ColorCmd is a purely interpretive command for setting the foreground and background color attributes of selected components. PUBLIC OPERATIONS
ColorCmd(ControlInfo*, PSColor* fg = nil, PSColor* bg = nil) ColorCmd(Editor* = nil, PSColor* fg = nil, PSColor* bg = nil) Create a ColorCmd, optionally specifying the foreground (fg) and background (bg) PSColors that components should adopt. virtual void Execute() ColorCmd extends Execute to set the value of the affected editor's ColorVar instance, if it defines one. PSColor* GetFgColor() PSColor* GetBgColor() Return the PSColors supplied in the constructor. SEE ALSO
Command(3U), pspaint(3U), statevars(3U) Unidraw 23 January 1991 ColorCmd(3U)

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edit(3U)						    InterViews Reference Manual 						  edit(3U)

NAME
ConnectCmd, CopyCmd, CutCmd, DeleteCmd, DupCmd, MobilityCmd, PasteCmd, RedoCmd, ReplaceCmd, SlctAllCmd, UndoCmd - editing commands SYNOPSIS
#include <Unidraw/Commands/edit.h> DESCRIPTION
The Unidraw library defines several commands that offer common component editing functionality. ConnectCmd is a non-interpretive command that connects two connectors. CopyCmd copies selected components onto its clipboard (if it defines one) or onto the global clipboard. CutCmd, DeleteCmd, DupCmd, and PasteCmd are purely interpretive commands that are always interpreted by their editor's component. Mobility- Cmd gives selected components the opportunity to set their mobility based on the value it provides. UndoCmd and RedoCmd are non-interpre- tive commands that simply undo and redo the last command that affected their editor's component. ReplaceCmd replaces selected components with the component it stores. Finally, SlctAllCmd is a non-interpretive command that selects all the components displayed in its editor. CONNECTCMD PUBLIC OPERATIONS
ConnectCmd( ControlInfo*, Connector* source = nil, Connector* target = nil ) ConnectCmd(Editor* = nil, Connector* = nil, Connector* = nil) The ConnectCmd constructor optionally takes two connectors as parameters, the source and the target. When executed, it will call Connect on source with target as its argument. It will also set the source's mobility to floating. void GetConnectors(Connector*& source, Connector*& target) Return the connectors supplied in the constructor. COPYCMD PUBLIC OPERATIONS
CopyCmd(ControlInfo*, Clipboard* = nil) CopyCmd(Editor* = nil, Clipboard* = nil) Create a CopyCmd instance, optionally specifying a clipboard in which to store copied components. virtual void Execute() Execute does nothing if no components are selected. Otherwise, Execute places a copy of the selected components onto the CopyCmd's clipboard if is non-nil or else onto the global clipboard (obtained from the catalog). virtual boolean Reversible() CopyCmd is not reversible. CUTCMD PUBLIC OPERATIONS
CutCmd(ControlInfo*, Clipboard* = nil) CutCmd(Editor* = nil, Clipboard* = nil) Create a CutCmd instance, optionally specifying a clipboard in which to store the components that were cut. virtual void Execute() virtual void Unexecute() CutCmd redefines these operations to let the editor's component interpret it. Execute will set the value of the _executed protected member variable to true as a side effect. Similarly, Unexecute will reset the value to false as a side effect. DELETECMD PUBLIC OPERATIONS
DeleteCmd(ControlInfo*, Clipboard* = nil) DeleteCmd(Editor* = nil, Clipboard* = nil) Create a DeleteCmd instance, optionally specifying a clipboard in which to store the components that were deleted. virtual void Execute() virtual void Unexecute() DeleteCmd redefines these operations to let the editor's component interpret it. Execute will set the value of the _executed pro- tected member variable to true as a side effect. Similarly, Unexecute will reset the value to false as a side effect. DUPCMD PUBLIC OPERATIONS
DupCmd(ControlInfo*, Clipboard* = nil) DupCmd(Editor* = nil, Clipboard* = nil) Create a DupCmd instance, optionally specifying a clipboard in which to store the components that were duplicated. virtual void Execute() virtual void Unexecute() DupCmd redefines these operations to let the editor's component interpret it. Execute will set the value of the _executed protected member variable to true as a side effect. Similarly, Unexecute will reset the value to false as a side effect. MOBILITYCMD PUBLIC OPERATIONS
MobilityCmd(ControlInfo*, Mobility = Fixed) MobilityCmd(Editor* = nil, Mobility = Fixed) Create a MobilityCmd instance, optionally specifying the mobility that interpreting components may use. Mobility GetMobility() Return the mobility specified in the constructor. PASTECMD PUBLIC OPERATIONS
PasteCmd(ControlInfo*, Clipboard* = nil) PasteCmd(Editor* = nil, Clipboard* = nil) Create a PasteCmd instance, optionally specifying a clipboard in which to store the components that will be pasted. virtual void Execute() virtual void Unexecute() PasteCmd redefines these operations to let the editor's component interpret it. Execute will set the value of the _executed pro- tected member variable to true as a side effect. Similarly, Unexecute will reset the value to false as a side effect. virtual boolean Reversible() PasteCmd is reversible if either its clipboard or the global clipboard is non-empty. REDOCMD PUBLIC OPERATIONS
RedoCmd(ControlInfo*) RedoCmd(Editor* = nil) Construct a new RedoCmd. virtual boolean Reversible() RedoCmd is not reversible. REPLACECMD PUBLIC OPERATIONS
ReplaceCmd(ControlInfo*, GraphicComp* replacement = nil) ReplaceCmd(Editor* = nil, GraphicComp* replacement = nil) Create a new ReplaceCmd, optionally supplying the GraphicComp that will replace those that are selected. GraphicComp* GetReplacement() Return the replacement GraphicComp supplied in the constructor. SLCTALLCMD PUBLIC OPERATIONS
SlctAllCmd(ControlInfo*) SlctAllCmd(Editor* = nil) Construct a new SlctAllCmd. virtual boolean Reversible() SlctAllCmd is not reversible. UNDOCMD PUBLIC OPERATIONS
UndoCmd(ControlInfo*) UndoCmd(Editor* = nil) Construct a new UndoCmd. virtual boolean Reversible() UndoCmd is not reversible. SEE ALSO
Catalog(3U), Clipboard(3U), Command(3U), Connector(3U), GraphicComp(3U), globals(3U) Unidraw 24 January 1991 edit(3U)

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