假如有五张相片 picturebox1.picture=loadpicture(app.path+"\1.jpg") command1.enable=false 'command1 是前一页按钮 if command2.value =true then picturebox1.picture=loadpicture(app.path+"\2.jpg") command1.enable=true我是个初学者,还是想不出来了,请指教
谢谢 我现在根据 fanqiezhang(番茄) 的思路来写写看,请各位指点: 我先定义一个picturebox控件数据,假如我有五张图片, 1,先定义好图片 for i =1 to 5 picturebox1(i).picture=loadpicture(app.path+"\i.jpg") next i 2,加载第一个图片时,前一页按钮失效 picturebox1(1).picture=loadpicture(app.path+"\1.jpg") command1.enable=false 3,点选按钮来实现翻页 if command2.value=true then pciturebox1(i)= false picturebox1(i++)=true 问题出来了,如何来知道按钮电击的次数呢?
dim PicIndex as integersub command1_click() 'command1 是下一页按钮 I=I+1 picturebox1.picture=loadpicture(app.path & "\" & I & ".jpg") if I>=5 then command2.enable=false else command2.enable=true end subsub command2_click() I=I-1 picturebox1.picture=loadpicture(app.path & "\" & I & ".jpg") if I<=0 then command1.enable=false else command1.enable=true end sub
我来根据番茄的方法给你补充一下代码:先设置picturebox1(0)的visible为true,其它的图片为false。cmdprevious按钮的enabled=false窗体模块中声明: dim i as integer窗口load事件中: for i =0 to 4 picturebox1(i).picture=loadpicture(app.path & "\" & i+1 & ".jpg") next iprivate sub cmdNext_click() i=i+1 picturebox1(i).visible=true picturebox1(i-1).visible=false cmdpreview.enabled=true if i=4 then cmdPrevious.setfocus cmdNext.enabled=false end if end subprivate sub cmdPrevious_click() i=i-1 picturebox1(i).visible=true picturebox1(i+1).visible=false cmdnext.enabled=true if i=0 then cmdnext.setfocus cmdprevious.enabled=false end if end sub未经调试,你自己调试一下,有问题贴出来。
在窗体的事件中忘了一句: for i =0 to 4 picturebox1(i).picture=loadpicture(app.path & "\" & i+1 & ".jpg") next i i=0 '这句加上。
dim n as integer const MaxPic as integer = 19 '假定有20张图片:pp0.jpg - pp19.jpg private sub form_load() picturebox1.picture=loadpicture(app.path & "\mypicture\pp" & cstr(n) * ".jpg") end subprivate sub cmdPre_Click() if n = 0 then n = MaxPic else n = n - 1 end if picturebox1.picture=loadpicture(app.path & "\mypicture\pp" & cstr(n) * ".jpg") end subprivate sub cmdNext_Click() if n = MaxPic then n = 0 else n = n + 1 end if picturebox1.picture=loadpicture(app.path & "\mypicture\pp" & cstr(n) * ".jpg") end sub
也可以用这个: private picBox() as picture 然后根报照片数初始化这个数组 可以按要求一次加载一定数得的图片 再用 set picture1.picture = picBox(i) 来将图片显示出来 注:picture1是pictureBox控件 i是数组下标
还有一种方法,将图片预存在imagelist中: set picturebox1.picture = imagelist1.listimages(n).picture 'n>=1
to victorycyz(中海) 我试过了,但只能打开第一次加载的图片。后面就不能显示了。 是不是我刚开始在控件数组里设定其他的visible属性为false 的原因
不会吧,我刚测试了一下,没有问题。有一处笔误,另,picturebox采用默认的名称,上面的代码完整地写出来: Dim i As IntegerPrivate Sub cmdNext_click() i = i + 1 Picture1(i).Visible = True Picture1(i - 1).Visible = False cmdPrevious.Enabled = True If i = 4 Then cmdPrevious.SetFocus cmdNext.Enabled = False End If End SubPrivate Sub cmdPrevious_click() i = i - 1 Picture1(i).Visible = True Picture1(i + 1).Visible = False cmdNext.Enabled = True If i = 0 Then cmdNext.SetFocus cmdPrevious.Enabled = False End If End SubPrivate Sub Form_Load() for i =0 to 4 picture1(i).picture=loadpicture(app.path & "\" & i+1 & ".jpg") next i i = 0 End Sub
very strange i have the same as your writing. why? my pictures can't display but the first picture
Picture1(i+1).visible=true
或
Picture1(i-1).visible=true
picturebox1.picture=loadpicture(app.path+"\1.jpg")
command1.enable=false 'command1 是前一页按钮
if command2.value =true then
picturebox1.picture=loadpicture(app.path+"\2.jpg")
command1.enable=true我是个初学者,还是想不出来了,请指教
我现在根据 fanqiezhang(番茄) 的思路来写写看,请各位指点:
我先定义一个picturebox控件数据,假如我有五张图片,
1,先定义好图片
for i =1 to 5
picturebox1(i).picture=loadpicture(app.path+"\i.jpg")
next i
2,加载第一个图片时,前一页按钮失效
picturebox1(1).picture=loadpicture(app.path+"\1.jpg")
command1.enable=false
3,点选按钮来实现翻页
if command2.value=true then
pciturebox1(i)= false
picturebox1(i++)=true
问题出来了,如何来知道按钮电击的次数呢?
I=I+1
picturebox1.picture=loadpicture(app.path & "\" & I & ".jpg")
if I>=5 then command2.enable=false else command2.enable=true
end subsub command2_click()
I=I-1
picturebox1.picture=loadpicture(app.path & "\" & I & ".jpg")
if I<=0 then command1.enable=false else command1.enable=true
end sub
dim i as integer窗口load事件中:
for i =0 to 4
picturebox1(i).picture=loadpicture(app.path & "\" & i+1 & ".jpg")
next iprivate sub cmdNext_click()
i=i+1
picturebox1(i).visible=true
picturebox1(i-1).visible=false
cmdpreview.enabled=true
if i=4 then
cmdPrevious.setfocus
cmdNext.enabled=false
end if
end subprivate sub cmdPrevious_click()
i=i-1
picturebox1(i).visible=true
picturebox1(i+1).visible=false
cmdnext.enabled=true
if i=0 then
cmdnext.setfocus
cmdprevious.enabled=false
end if
end sub未经调试,你自己调试一下,有问题贴出来。
for i =0 to 4
picturebox1(i).picture=loadpicture(app.path & "\" & i+1 & ".jpg")
next i
i=0 '这句加上。
const MaxPic as integer = 19 '假定有20张图片:pp0.jpg - pp19.jpg private sub form_load()
picturebox1.picture=loadpicture(app.path & "\mypicture\pp" & cstr(n) * ".jpg")
end subprivate sub cmdPre_Click()
if n = 0 then
n = MaxPic
else
n = n - 1
end if
picturebox1.picture=loadpicture(app.path & "\mypicture\pp" & cstr(n) * ".jpg")
end subprivate sub cmdNext_Click()
if n = MaxPic then
n = 0
else
n = n + 1
end if
picturebox1.picture=loadpicture(app.path & "\mypicture\pp" & cstr(n) * ".jpg")
end sub
private picBox() as picture
然后根报照片数初始化这个数组
可以按要求一次加载一定数得的图片
再用
set picture1.picture = picBox(i)
来将图片显示出来
注:picture1是pictureBox控件
i是数组下标
set picturebox1.picture = imagelist1.listimages(n).picture 'n>=1
我试过了,但只能打开第一次加载的图片。后面就不能显示了。
是不是我刚开始在控件数组里设定其他的visible属性为false 的原因
我们上面所谈论的就是针对一个目录下的图片的调用。
如果是这样:
现在是一个CAI(课件)
里面有很多课程,而每一个课程又有很多图片构成。现在要通过一个picture1
和两个按钮command来调用图片。
课程安排在一个treeview上,当我们点击一个课题时,右侧的picture1打开第一个图片
然后有下面的 command来打开其余的
现在一个课程的问题解决
对于多个课程如何来通过按钮来实现呢?
Dim i As IntegerPrivate Sub cmdNext_click()
i = i + 1
Picture1(i).Visible = True
Picture1(i - 1).Visible = False
cmdPrevious.Enabled = True
If i = 4 Then
cmdPrevious.SetFocus
cmdNext.Enabled = False
End If
End SubPrivate Sub cmdPrevious_click()
i = i - 1
Picture1(i).Visible = True
Picture1(i + 1).Visible = False
cmdNext.Enabled = True
If i = 0 Then
cmdNext.SetFocus
cmdPrevious.Enabled = False
End If
End SubPrivate Sub Form_Load()
for i =0 to 4
picture1(i).picture=loadpicture(app.path & "\" & i+1 & ".jpg")
next i
i = 0
End Sub
i have the same as your writing.
why?
my pictures can't display but the first picture