Photoshop Layers: Copy, Cut and Paste

[Character]

I try to make a copy / paste in Photoshop Elements in the same image. I made copies of layers. If I make a cut on a white area . It said "Unable to execute the Copy command because the selected area is empty ". Unbelievable. I actually want to copy this white box and paste it into my image to another location. Can anybody have any idea what's wrong with me? Please help. Thanks in advance.

[MindSpace]

You can use the Move tool to copy selections as you drag in or between Photoshop images . You can also copy and move selections using the Copy command , Copy Merged , Cut and Paste . Use the Move tool , however, requires less memory , because the clipboard is not as requested with the commands.
Copy - Copy the selected part on the active layer .
Copy Merged - Performs a copy with merge all layers visible on the selected portion.
Paste - Pastes a cut or copied selection into another part of the image or in another image as a new layer. If a selection is active, the Paste command replaces the current selection by the copied selection . In the absence of active selection , the Paste command places the copied selection in the middle of the display area .

[Zecho]

You need to pastes a cut or copied selection into another selection of the same image or another image. The source selection is pasted on a new layer , and the selection frame is converted into target mask. When pasting a selection or layer between two images of different resolutions , the pasted data retain their dimensions in pixels. The bonded portion may thus appear disproportionate in the new image. Using the Image Size command , set a resolution identical to the source and target images before the operation to copy / paste , or use the Transform command to resize the copied content .

[opaper]

Depending on your settings for color management and color profile associated with the file ( or imported data) , you may be prompted to specify the desired processing of color information in the file (or imported data ) .
Copying a selection

1. Select the area to be copied.
2. Choose Edit > Copy or Edit> Copy Merged

[Reegan]

Check the steps:
# Cut or copy the part of the image to stick.
# Select the portion of the frame in which to paste the selection . The source and target selections can be found in the same image or in two different Photoshop images .
# Choose Edit > Paste Into . The contents of the source selection appears in the selection target .
Paste Into Operation and adds a layer mask to the image . In the Layers panel , the new layer contains a layer thumbnail to select pasted next to the layer mask thumbnail . The mask is created after the pasted selection : the selection is not hidden (in white ) , the rest of the layer is hidden (in black ) . The layer and layer mask are not linked: you can move independently of one another.

[Galbraith]

You can use masks to hide portions of a layer and reveal parts of the layers below. You can create two types of masks:
• The layer masks are bitmap resolution-dependent and are modified using painting tools and selection.
• The vector masks do not depend on the resolution obtained with the pen tools and shape.
The layer masks and vector are not destructive , which means you can return to the previous version of the mask and later change it again without losing the masked pixels .