| tk2ico {tcltk2} | R Documentation |
Create, load and work with Windows icons. Change icons fo Windows, use icons in the taskbar under Windows 9X/2000/XP, ... These function are only useful for Windows.
tk2ico.create(icofile)
tk2ico.destroy(icon)
tk2ico.hicon(icon)
tk2ico.info(icon, convert = TRUE)
tk2ico.load(file = "shell32.dll", res = "application")
tk2ico.pos(icon, pos)
tk2ico.set(win, icon, pos = NULL, type = c("all", "small", "big"))
tk2ico.text(icon, text = NULL)
tk2ico.taskbar.add(icon, pos = 0, text = tk2ico.text(icon), callback = NULL)
tk2ico.taskbar.delete(icon)
tk2ico.taskbar.modify(icon, pos = NULL, text = NULL)
icofile |
A file with a .ico extension, containing one or more Windows icons |
icon |
An icon object |
convert |
Do we convert the result into a data.frame? |
file |
A file having icon resources (.exe, or .dll) |
res |
The name of the resource from where the icon should be extracted |
pos |
A position (starting from 0) pointing to an icon in a multi-icon object |
win |
A tk window whose icon is changed |
type |
Do we change only the small, the large, or both icons? |
text |
Change a text for an icon |
callback |
Give a callback function called when the user clicks in the taskbar icon |
An icon object, which is a reference to an image resource in tcl. Do not forget to
destroy it using tk2ico.destroy() when you do not need it any more!
This is Windows-specific. It uses the winico 0.5 Tcl library. Under other platforms
these functions just return NULL without error or warning. So, code that must
run on different platforms could use these functions all the time, as soon as they
correctly deal with possible NULL return.
Philippe Grosjean
## Not run:
## These cannot be run by examples() but should be OK when pasted
## into an interactive R session with the tcltk package loaded
## Examples of tk2ico - icon manipulation under Windows
tt2 <- tktoplevel()
# Load a system icon (there are: "application", "asterisk", "error",
# "exclamation", "hand", "question", "information", "warning", and "winlogo".
Warn <- tk2ico.load(res = "warning")
tk2ico.info(Warn)
# Change the text
tk2ico.text(Warn)
tk2ico.text(Warn, "Warning icon")
tk2ico.text(Warn)
# Get hicon
tk2ico.hicon(Warn)
# Change the icon of my window tt2
tk2ico.set(tt2, Warn)
# Do not forget to destroy icon to free resource when not needed any more
tk2ico.destroy(Warn)
rm(Warn)
# Load an icon from the resource section of an exe, or dll
Rico <- tk2ico.load(file.path(Sys.getenv("R_HOME"), "bin", "R.exe"), res = "R")
tk2ico.info(Rico)
tk2ico.set(tt2, Rico)
tk2ico.destroy(Rico)
rm(Rico)
# Load one or several icons from an .ico file
libdir <- file.path(.path.package(package="tcltk2")[1], "etc")
SVico <- tk2ico.create(file.path(libdir, "SciViews.ico"))
# The various resolution icons created from this file
tk2ico.info(SVico)
# Change the default position to 1
tk2ico.pos(SVico, 1)
# Change only the small icon (use Alt-Tab to see the large one)
tk2ico.set(tt2, SVico, pos = 0, type = "small")
### This does not work!
## Set a taskbar icon (rem: should use callback usually)
#tk2ico.taskbar.add(SVico, pos = 0, text = "{my tcltk taskbar icon}")
## Change its text...
#tk2ico.tackbar.modify(SVico, text = "{text changed!}")
##... and delete it
#tk2ico.taskbar.delete(SVico)
# Destroy the icons
tk2ico.destroy(SVico)
rm(SVico)
# When done, dispose of the window
tkdestroy(tt2)
## End(Not run)