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C++ is different than C#. In C++, you only need to specify "public:" once above the members you want to be public, whereas in C# you need to specify "public" in front of each member you want to be public.
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No, they're internal .
/ravi
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I believe you will have to provide set_ and get_ methods in your C++ code to access the data as these are fields.
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Dear peter
Thanks for the reply,
i have not only public variables and also public methods. i could not access anything.
i do not know where is my mistake. is there anything i need to do to access the public method of c++ class?
i just added the dll in my reference, then i specified in the Using namespace.
Thanks
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Is this a managed C++ class? You can't add an unmanaged DLL to .NET like this - you need to either wrap it in a Managed C++ implementation, or you need to p/invoke into it.
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I'm developing a client/server system which uses native sockets for communication between the two.
One irritation I'm having is that once a connection has been established, if one of the processes (client or server) dies or is killed, a SocketException is thrown in the other. Arguably this is correct but I'd much rather have an event fired or a callback or something if the connection breaks - I like to debug things with first chance exceptions turned on (I do know I can filter out SocketExceptions) and it gets in the way.
Does anyone know a way of avoiding these exceptions?
Regards,
Rob Philpott.
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Try/Catch
I know the language. I've read a book. - _Madmatt
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Yeah, sure I can use exception handling. But what I really want is to handle disconnections without it.
Regards,
Rob Philpott.
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Exception handling is the best way to approach it. If you want to, you can post an event in the exception block.
.45 ACP - because shooting twice is just silly ----- "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001
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Good question. Not that I know of. The only way I've managed in the past is to send a custom SocketClosing message between them to inform the other. This only works if you are in control of both Server and Client code of course and will not handle 'improper' closure of either.
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
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I have just struck this. Using VS2008
private void button2_Click(object sender, EventArgs e)
{
bool cond1 = this.confirmDeletesToolStripMenuItem.Visible;
bool cond2 = !this.confirmDeletesToolStripMenuItem.Visible;
MessageBox.Show(string.Format("Cond1 = {0} Cond2 = {1}",cond1,cond2));
this.confirmDeletesToolStripMenuItem.Visible = !this.confirmDeletesToolStripMenuItem.Visible;
cond1 = this.confirmDeletesToolStripMenuItem.Visible;
cond2 = !this.confirmDeletesToolStripMenuItem.Visible;
MessageBox.Show(string.Format("Cond1 = {0} Cond2 = {1}", cond1, cond2));
}
The confirmDeletesToolStripMenuItem is not the topmost menuitem.
If I get the value of any top level menu item it returns the correct value i.e True if set to Visible = True;
Whereas the lower menu levels return False even if set to True.
I would have thought that the Visible property is a reflection of whether it should be displayed rather than whether it can be seen?
I can set the Visible property directly eg this.confirmDeletesToolStripMenuItem.Visible = True; but still returns False.
Thanks for any help....
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So, if the item is visible and you then do 'item.Visible = false;' does that make it disappear? And how about after 'Visible' is set to 'false'? If you then call 'item.Visible = true;' does the item actually show up again?
Just to make sure I'm clear, I don't mean "does that return true", I mean does it physically disappear/appear as it should?
That is unlike anything I've ever seen. I have a project that I'm working on in which I toggle the 'Visible' property for several menu and toolstrip items. Each of them works perfectly normal.
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Matt U. wrote: So, if the item is visible and you then do 'item.Visible = false;' does that make it disappear? And how about after 'Visible' is set to 'false'? If you then call 'item.Visible = true;' does the item actually show up again?
Yes when setting the Visible property in this way the item disappears and appears as you would expect.
It just always returns false. Even something like....
item.Visible = true;
bool isVisible = item.Visible;
returns false, despite actually being Visible. Hence the inabilty to Toggle based on it current state.
What I have found is that the top level menu items behave as expected, whereas the lower level, or at least mine on the 2nd and 3rd levels don't seem to behave?
modified on Friday, September 3, 2010 12:59 AM
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This is the correct behaviour. As the parent menu item isn't visible, it is impossible for the child to be visible therefore setting the Visible property has no effect.
You should either:
1. Set the visibility of the higher items first.
2. Use the Enabled property instead. You could iterate over all the items and set Visible based on Enabled .
private void SetMenuItemsVisiblity(MenuStrip menuStrip)
{
foreach (ToolStripMenuItem item in menuStrip.Items)
{
item.Visible = item.Enabled;
if (item.Visible && item.DropDownItems.Count > 0)
SetToolStripMenuItemVisiblity(item);
}
}
private void SetToolStripMenuItemVisiblity(ToolStripMenuItem item)
{
foreach (ToolStripMenuItem subItem in item.DropDownItems)
{
subItem.Visible = subItem.Enabled;
if (subItem.Visible && item.DropDownItems.Count > 0)
SetToolStripMenuItemVisiblity(subItem);
}
}
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
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Thanks Dave
DaveyM69 wrote: This is the correct behaviour. As the parent menu item isn't visible, it is impossible for the child to be visible therefore setting the Visible property has no effect.
The parent menu item is visible.
If I get the value of any top level menu item it returns the correct value i.e True if set to Visible = True;
Whereas the lower menu levels return False even if set to True. (Even if the parent menu item is Visible)
It looks to me like a subitem returns false because it is not visible until the menu drops down from the parent.
Is this normal behaviour? Is the system changing the Visibility property temporarily until the menuitem drops down and is visible? (if the Parent is visible and even if subitem.Visibilty = true)
Lew
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Ah! Now I understand.
The Visible property returns whether it's actually being displayed right now. This should IMO be read-only in this case as setting it actually sets another property instead!
Check out the Available[^] property which behaves exactly as you want.
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
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Thanks again Dave,
The documentation for Available actually explains Visible better than the Visible Docs.
I thought that it must have been working correctly, (in an odd way). Just couldn't see it in the documentation.
Thanks
Lew
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I have a project coming up (unpaid) indexing newsletters for a Gardening group I am a member of.
The newsletters are in PDF format. As I dabble in c# I thought I may be able to automate the process somewhat.
There appears to be a lot of c# pdf stuff out there to generate and manipulate .pdf docs.
Based on your experience I'm hoping to shorten the process of finding the right solution.
My initial needs are fairly simple....
1) Open an unprotected pdf document.
2) Browse the document.
2) Double click (or select somehow) different selected words.
(this should then highlight every instance of each selected word throughout the document as a visual cue it has been selected already)
3) Generate an index showing A) the selected word and B) the page number(s)
I have a lot of documents to process and they will continue to be ongoing so any help would be great.
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i need to make a drag and drop operation between 2 labels.
in the dragdrop event of the destination i'm able to get the text from the source using
e.Data.GetData(DataFormats.Text)
My problem is that i need the rest of the properties from my source label. How do i get this?
thanks for your time
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Every D&D operation will transfer a DataObject with a format of your choice; if you choose DataFormats.Text, then all you can transfer is a string, which could be the label's text, its name, whatever you choose; you could even serialize the whole label in the one string.
You could also create your own DataFormat; that of course only makes sense if you are involved in the definition of both the source and the destination app involved in the D$D (assuming your D$D is inter-app). If all you are doing is making an intra-app D&D, then you could still do that, however if so you don't really need D&D at all, as you could just handle the mouse events and clone the Control involved.
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I'm using the WeatherBug API to retrieve weather data. Unfortunately there are no good examples or documentation for C# to help me with this. What I do know is that I'm making a SOAP call, receiving a SOAP response, which contains XML in an object of type GetLiveCompactWeatherByUSZipCodeResponse.
My question is: How can I get that soap response and get the XML? I know how to manipulate the XML but how do I get to it when it comes back as a type called GetLiveCompactWeatherByUSZipCodeResponse?
I'm calling this URL: http://api.wxbug.net/webservice-v1.asmx?op=GetLiveCompactWeatherByUSZipCode[^]
My code is:
WeatherBugWebServicesSoapClient proxy = new WeatherBugWebServicesSoapClient("WeatherBugWebServicesSoap");
result = proxy.GetLiveCompactWeatherByUSZipCode("52722", api.wxbug.net.UnitType.English, "xxxxxxxxxx");
result is a string (just to get the raw xml for now). When I do this the red line says: Cannot implicitly convert type api.wxbug.net.LiveCompactWeatherData to string.
Any help is much appreciated.
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Hi,
Does anybody know of a good example of using variables between multiple forms.
I am in need of one as I could do it and now I can't (get, set and the rest!)
Glenn
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Maybe you could start here[^]
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Great, thanks for that. But I'm looking for a way that Form1 can call up Form2, Form2 then has data that is passed back to Form1. Most of the methods I (yours included) Form1 passes the data to Form2 and not the other way I was looking at trying to alterone your methods to that but have come unstuck, is Properties approach the way to go or not and what is the overhead? All I'm think of doing is inputting three ints and away.
Glenn
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Instead of doing it that way, you could just setup a static object that contains your data, and use that object in all of the forms. That way, when one form sets the data, the other form can read it, and change it as well.
.45 ACP - because shooting twice is just silly ----- "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001
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