This function gets the Windows handles of visible top level windows or windows within the R MDI frame.
getWindowsHandles(which = "R", pattern = "", minimized = FALSE)A vector of strings "R" or "all" (possibly with repetitions). See the Details section.
A vector of patterns that the titles of the windows must match.
A logical vector indicating whether minimized windows should be considered.
A list of external pointers containing the window handles.
This function will search for Windows handles, for passing to external
GUIs or to the arrangeWindows function. Each of the
arguments may be a vector of values. These will be treated as
follows:
The arguments will all be recycled to the same length.
The corresponding elements of each argument will be applied in separate searches.
The final result will be the union of the windows identified in each of the searches.
If an element of which is "R", only windows belonging to
the current R process will be returned. In MDI mode, those will be the
child windows within the R GUI frame. In SDI mode, all windows
belonging to the process will be included.
If the element is "all", then top level windows will be returned.
The elements of pattern will be used to make a subset of windows
whose title text matches (according to grep) the pattern.
If minimized = FALSE, minimized windows will be ignored.