如何创建gWidgets表单

Question

提前感谢您提供的任何帮助。我正在尝试创建一个GUI，允许用户选择选择文件所在的目录，然后输入其他一些信息。然后，我希望能够计算文件夹中有多少文件以及从文件中获取的其他信息等信息。我需要用户输入的值来进行任何分析。但是，当我使用svalue（）时出现错误。我还想在笔记本的第二个选项卡上总结这些信息。到目前为止，这是我的代码：

library(gWidgets)
library(gWidgets2)
library(gWidgets2RGtk2)
library(gWidgetsRGtk2)
library(gWidgetstcltk)
library(gWidgets2tcltk)
library(pdftools)

require(gWidgets2RGtk2)
fileChoose <- function(action="print", text = "Select a file...",
                   type="open", ...) {
  gfile(text=text, type=type, ..., action = action, handler =
      function(h,...) {
        do.call(h$action, list(h$file))
      })
}
path <- fileChoose(action="setwd", type="selectdir", text="Select a 
directory...")
files <- list.files(path, full.names = TRUE)
files_ex <- file_ext(files)
win <- gwindow("DataMate Project")
grp <- ggroup(horizontal = FALSE, container=win)
nb <- gnotebook(container = grp, expand=TRUE)
group1 <- ggroup(horizontal = FALSE, container=nb, label = "Input")
x <- c("SELECT CUSTOMER", "Eaton", "NG", "Spectris", "Other")
n <- length(files_ex)
lyt <- glayout(cont = frame)
glabel("File Path to Docs", container = group1)
p <- gedit(path, container=group1)
glabel("To your knowledge is this an ITAR quote?", container = group1)
itar <- gradio(c("Non-ITAR","ITAR"), container=group1)
glabel("Who is the customer? (Parent company)", container = group1)
cust <- gcombobox(x, container=group1)
glabel("How many RFQs / Assemblies?", container = group1)
val <- gspinbutton(from=1, to = 100, by =1, value=1,container=group1)
run <- gbutton("Run", container = group1, gmessage(svalue(val))

Answer 1

也许这会给你一个开始：

show_gui <- function(parent, path) {

    files <- list.files(path, full.names = TRUE)
    files_ex <- tools::file_ext(files)

    nb <- gnotebook(container = parent, expand=TRUE)

    group1 <- gframe(horizontal = FALSE, container=nb, label = "Input", expand=TRUE)
    x <- c("SELECT CUSTOMER", "Eaton", "NG", "Spectris", "Other")
    n <- length(files_ex)
    glabel("File Path to Docs", container = group1)
    p <- gedit(path, container=group1)
    glabel("To your knowledge is this an ITAR quote?", container = group1)
    itar <- gradio(c("Non-ITAR","ITAR"), container=group1)
    glabel("Who is the customer? (Parent company)", container = group1)
    cust <- gcombobox(x, container=group1)
    glabel("How many RFQs / Assemblies?", container = group1)
    val <- gspinbutton(from=1, to = 100, by =1, value=1,container=group1)
    run <- gbutton("Run", container = group1, handler = function(h, ...) {
        gmessage(svalue(val))
    })




}





w <- gwindow("GUI")
parentgroup <- ggroup(cont=w)
g = ggroup(cont=parentgroup, horizontal=FALSE)
glabel("Choose a file to proceed", cont=g)

gfilebrowse(cont=g,  type="selectdir", handler=function(h, ...) {
    dname = svalue(h$obj)
    if (dir.exists(dname)) {
        delete(parentgroup, g)
        show_gui(parentgroup, dname)
    } else {
        gmessage("That file does not exists")
    }
})

你有几个错误。我没有为你完成剩下的工作，但是在按钮处理程序中，你将在新选项卡中创建小部件，并使用svalue（nb）< - 2切换到该选项卡。