QCad User Reference Manual
|  |  | # 15 Entity Selection The selection tools documented in this chapter are used to select entities for later modification. For example if you want to move some entities, you need to select them before you can do so. The selection tells QCad which entities you intend to move. Selected entities are highlighted in the graphic view with red color and a unique tight dotted line pattern. ## Deselecting All CAD Toolbar: Menu: Select - Deselect All Command: ? Description: Deselects all entities on all currently visible layers. Use this tool to make sure that no entities are selected. ## Selecting All CAD Toolbar: Menu: Select - Select All Command: ? Description: Selects all entities on all currently visible layers. ## Selecting Single Entities CAD Toolbar: Menu: Select - Select Entity Command: ? Description: Selects single entities. Procedure: Use the mouse to specify the entities to select. If you click an entity that is already selected it will get deselected. ## Selecting Contours CAD Toolbar: Menu: Select - (De-)Select Contour Command: ? Description: Selects or deselects entities that are connected to each other and form a contour (closed or open). Procedure: Use the mouse to pick one entity of the contour you want to select. The algorithm then searches from the endpoints of the selected entity in both directions for entities that are connected to this entity. All connected entities get selected if the entity you picked was unselected. Otherwise the whole contour will be deselected. ## Window Deselection CAD Toolbar: Menu: Select - Deselect Window Command: ? Description: Deselects all entities that are entirely within a given window. Procedure: Click the first corner of the window using the left mouse button. Drag the mouse to the other corner. Click the second corner of the window. ## Window Selection CAD Toolbar: Menu: Select - Select Window Command: ? Description: Selects all entities that are entirely within a given window. Procedure: Analog to deselecting entities in a window. ## Inverting Selection CAD Toolbar: Menu: Select - Invert Selection Command: ? Description: Selects all unselected entities and deselects all selected entities. ## Deselect Intersected Entities CAD Toolbar: Menu: Select - Deselect Intersected Command: ? Description: Deselects all entities that are intersected by a line. Procedure: Set the startpoint of the line using the left mouse button. Drag the mouse to the endpoint of the line. Set the endpoint of the line. All entities that are intersected by the line you've just drawn will be deselected. ## Select Intersected Entities CAD Toolbar: Menu: Select - Select Intersected Command: ? Description: Selects all entities that are intersected by a line. Procedure: Analog to deselecting intersected entities.
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