Re: main form instance name - Managed C++/CLI Discussion Boards

Re: Stop Closing the main Dialog when a child Dailog is open?

Christian Graus12-Jun-07 11:30

Christian Graus

12-Jun-07 11:30

Iterate through them and check their Visible property.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

windows schedular is not working

srinivassam11-Jun-07 20:43

srinivassam

11-Jun-07 20:43

in my project is asp.net with c# project but my vss schedular is asp.net with vb.net.
Every this schedular is running on night 12.00am .
In that schedular i have somany doc files and excel files,.pdf files.
So while schedular running time html paths and actual document paths but some times it automatically stopped then i want do if any document contains problem then schedular ignore's that document and goes to next document.For this i want code. Iam sending some of the classes of the my project.
<pre>
public function get vss connection()
Public Function PopulateProject() As Boolean
Private Function PopulateSubProject(ByVal sParent As String, ByVal ItemIsDeleted As Boolean) As Boolean
Private Function Traverse(ByVal sProjectPath As String, ByVal SWFPath As String)
Private Function PopulateFiles(ByVal sParentID As Long, ByVal sProjectPath As String, ByVal sFolderPath As String) As Boolean
Private Sub InsertMenuRights()
Private Sub InsertDocNames()
Private Sub CreateFolder(ByVal Path As String)
Private Function GetNWExt(ByVal FileName As String) As String
Public Sub Conversion()
Private Function GetHTMLPath(ByVal FilePath As String)
Private Sub DocToHTML(ByVal FilePath As String, ByVal HTMLPath As String)
Private Sub PptToHTML(ByVal FilePath As String, ByVal HTMLPath As String)
Private Sub PDFToHTML(ByVal FilePath As String, ByVal HTMLPath As String)
Private Sub ExcelToHTML(ByVal FilePath As String, ByVal HTMLPath As String)
Private Function GetTPath(ByVal DocPath As String)
Private Function GetTruncPath(ByVal HTMPath As String)
where i will mention code in this classes.Please help me.
</pre>

samrama

Re: windows schedular is not working

Christian Graus11-Jun-07 21:16

Christian Graus

11-Jun-07 21:16

Then why are you asking in the C++/CLI forum ? Don't cross post, pls.

main form instance name

aaron_leese11-Jun-07 19:45

aaron_leese

11-Jun-07 19:45

I feel like a bit of a newbie asking this, but I have never had to access elements on the main form from outside it before.

So here it is: I need to access a textbox from a cpp file .... the textbox is on the main form which is initialized in the main function ... with the usual Application::Run.

in the main cpp file:

..........................................

#include "Form1.h"

int main(array ^args)
{

Application::Run(gcnew Form1());

Form1::textBox1->Text = "some text";

}
...........................................

This doesn't work of course, because I am referencing the header class itself, and not the form instance .... but what is the form instance ????

now ... I know I could use ...

Form1^ myForm = gcnew Form1;
myForm->ShowDialog();

except that gcnew objects cannot be declared globally, and I need to access some of the form elements from other parts of the code, not main().

So I'm stuck .... any help would be appreciated.

Thanks
Aaron

Re: main form instance name

led mike12-Jun-07 4:28

led mike

12-Jun-07 4:28

aaron_leese wrote:
I have never had to access elements on the main form from outside it before.

Good, you don't want to... check out the Model-View-Controller[^] design pattern.

Re: main form instance name

aaron_leese12-Jun-07 15:10

aaron_leese

12-Jun-07 15:10

yeah I know, but I still want to ... it is not always desirable to have a couple layers of indirection between interface and data.

Re: main form instance name

led mike13-Jun-07 7:02

led mike

13-Jun-07 7:02

It's never desirable to have anything until it is desirable to have it. That is the entire point.... never mind.

aaron_leese wrote:
yeah I know, but I still want to

Of course you do... I don't know what got into me. Sleepy | :zzz:

Re: main form instance name

Mark Salsbery13-Jun-07 7:57

Mark Salsbery

13-Jun-07 7:57

aaron_leese wrote:
int main(array ^args)
{

Application::Run(gcnew Form1());

Form1::textBox1->Text = "some text";

}
...........................................

This doesn't work of course, because I am referencing the header class itself, and not the form instance .... but what is the form instance ????

Hmm...seems to me this also doesn't work because Run() doesn't return until you exit the app by
closing the form.

Form1^ myForm = gcnew Form1; would work but it makes no sense to access controls in the form
before it's created.

Do you have a better example of what you're trying to do?

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: main form instance name

aaron_leese13-Jun-07 18:41

aaron_leese

13-Jun-07 18:41

sure .. here is all the grubby details....

I have a multithread program .... one thread monitors the gui events, the other looks for incoming midi messages.

There are certain midi messages that trigger subroutines .... and there are buttons that do the same. The gui appearance need to change to reflect when certain subroutines are running, etc.

most of the subroutines change some global variables, and the gui just polls those variables to determine the state of affairs and appear accordingly.

BUT ... sometimes this is not appropriate, and I need to get some of the subroutines to alter the gui directly. No problem is a button is pushed .... big problem if it's a midi command .... because that thread does not have access to the form elements.

so ... succinctly .... how do I get a thread to access a form which is running on another thread.

I think I can do it if i only knew the correct instance name of the generated form.

any thoughts ?

Aaron

Retrieve FileVersion of an exe

IamPoojaa11-Jun-07 1:45

IamPoojaa

11-Jun-07 1:45

Hi Frnz,

I need to find the version details of my exe file. My exe code is in C++. Can anybody help me for the same in C++ to find the Version of any exe.

Thnz in advance Sniff | :^)

poojaaa

Re: Retrieve FileVersion of an exe

Mark Salsbery11-Jun-07 7:55

Mark Salsbery

11-Jun-07 7:55

First of all, please post non-managed C++ questions on the Visual C++/MFC board[^].

If your EXE has a VERSION resource, you can get it with the help of these APIs:

GetFileVersionInfoSize()
GetFileVersionInfo()
VerQueryValue()

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

still reflecting / major problem

Xeef10-Jun-07 5:16

Xeef

10-Jun-07 5:16

can a reflected methode not return gcnew System::Windows::Forms::TextBox()

but just base types like INT ???

if not mean it can return TextBox

where do i go wrong ?

myType = SampleAssembly->GetType("Memory.What");
myObj = System::Activator::CreateInstance( myType );
myMethod = myType->GetMethod("Name");
myMethod->Invoke( myObj , nullptr ); <<<--- here is the error
i have a MessageBox::Show in Memory.What.Name wich is fiered and also shows TextBox->ToString() corect which shoud by returned
(ToString is for testing in the messagebox dont get confused)

An unhandled exception of type 'System.NullReferenceException' occurred in WhatsUp.exe
Additional information: Object reference not set to an instance of an object.

adding char arrays together for one function arg

NZSmartie9-Jun-07 17:54

NZSmartie

9-Jun-07 17:54

opps wrong place

Reflection how to cast to loaded type

Xeef9-Jun-07 10:07

Xeef

9-Jun-07 10:07

hi all

System::Reflection::Assembly^ SampleAssembly;<br />
		System::Type^ myType;<br />
		System::Activator::Object^ myObj;<br />
<br />
		try {<br />
			SampleAssembly = System::Reflection::Assembly::LoadFrom( Path );<br />
		}<br />
		catch (System::IO::FileNotFoundException^ catchException) <br />
		{<br />
			Form->_TabCon->_PageStatus->StatusText->Text += catchException->ToString() + System::Environment::NewLine;<br />
			return 1;<br />
		}<br />
<br />
		try {<br />
			myType = SampleAssembly->GetType("Memory.What"); <br />
			if (!myType) throw (System::String^) "Can´t locate Base Function [incompatible plug ???]";<br />
		}	<br />
		catch (System::String^ catchException)<br />
		{<br />
			Form->_TabCon->_PageStatus->StatusText->Text += catchException + System::Environment::NewLine;<br />
			return 1;<br />
		}<br />
		myObj = System::Activator::CreateInstance( myType ); // creates the instance<br />
		<big>What^ W = (What^)myObj;</big>

how can i cast to "What^" ?
i tryed to have a .h .cpp file whit the same declaration as in "Memmory.what" but i get an error

An unhandled exception of type 'System.InvalidCastException' occurred in WhatsUp.exe
Additional information: Unable to cast object of type 'Memory.What' to type 'WhatsUp.What'.

Re: Reflection how to cast to loaded type

sarah_malik9-Jun-07 12:03

sarah_malik

9-Jun-07 12:03

Try this:
What^ W = safe_cast<What^> (myObj);

Re: Reflection how to cast to loaded type

Xeef9-Jun-07 13:10

Xeef

9-Jun-07 13:10

unfortunaly no Frown | :(

same error

this is where i am in the moment :

myType = SampleAssembly->GetType("Memory.What");
myObj = System::Activator::CreateInstance( myType );
System::Reflection::MethodInfo^ mi = myType->GetMethod("Ver");
mi->Invoke(myObj , nullptr );

so i can call the methode but its not to elegant there muss by some other way

so that i can call it like :

LoadedDLL->Ver();

C++ dll problem

sujithkumarsl8-Jun-07 0:11

sujithkumarsl

8-Jun-07 0:11

hi i am new in c++, just developed one c++ dll(win32) from VS2005.
I just want to know how can i use that dll from a simple console c++ application.
or from C#.
please help
[&]&&

My small attempt...

Re: C++ dll problem

Mark Salsbery8-Jun-07 4:41

Mark Salsbery

8-Jun-07 4:41

An unmanaged C++ question which mentions C#...posted on the managed C++ board.

Please take your question to the appropriate board, before I call security... Poke tongue | ;-P

Visual C++/MFC[^]
C#[^]

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Best way to learn C++

Brad Fackrell7-Jun-07 7:46

Brad Fackrell

7-Jun-07 7:46

I’m trying to figure out what the best way is to learn C++. Book, on-line course etc. Has anybody here had any good or bad experiences with anything? I’m leaning towards some sort of self paced book.

I have some VB.NET background and one beginner level C++ class years ago. I remember nothing about the C++.

I need to learn enough to be able to take (and pass) a required upper level C++ class so that I can finish a degree that I’ve been working on for 10 years. Plus some C++ knowledge would be nice for my job.

Any help and or suggestions would be appreciated.

Thanks
Brad

Re: Best way to learn C++

Christian Graus7-Jun-07 12:32

Christian Graus

7-Jun-07 12:32

This is the C++/CLI forum. C++/CLI would be easier for you, seeing as it contains the .NET framework that you already know. But, if you want to learn C++, I recommend a book, and if you have any questions about c++, I recommend the Visual c++ forum.

Re: Best way to learn C++

Brad Fackrell8-Jun-07 3:03

Brad Fackrell

8-Jun-07 3:03

Alright. Thanks Christian.

Linker Error LNK2001

Tal S.6-Jun-07 22:29

Tal S.

6-Jun-07 22:29

Hello,

I try to compile exe at VS2005 and get this error:

uafxcwd.lib(appcore.obj) : error LNK2001: unresolved external symbol ___wargv
uafxcwd.lib(appcore.obj) : error LNK2001: unresolved external symbol ___argc

Do you know what to look for?

Thanks!

Re: Linker Error LNK2001

Mark Salsbery7-Jun-07 5:25

Mark Salsbery

7-Jun-07 5:25

Is it VS 2005 Express Edition?

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: Linker Error LNK2001

Tal S.10-Jun-07 22:15

Tal S.

10-Jun-07 22:15

Microsoft Visual Studio 2005
Version 8.0.50727.762 (SP.050727-7600)
Microsoft .NET Framework
Version 2.0.50727

Re: Linker Error LNK2001

Mark Salsbery11-Jun-07 6:18

Mark Salsbery

11-Jun-07 6:18

hmmm I'm not sure - those variables should be in the C runtime (CRT) library.

I'm wondering if you're trying to make an MFC app with Visual Studio Express Edition.
That won't work.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

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