Managed C++/CLI

Re: Passing Data between Forms ???

19-Feb-08 7:01

Badboy22TR wrote:
I want to transfer data from Child Form's textboxes to Parent form textboxes. How can i do this ?

One approach is you can learn about Design and Patterns like Model-View-Controller.

Another approach that most people around here do is expose the controls as public properties and just set/get the data from one to the other whenever you like, that way they are tightly coupled so that when you want to change something later it's a big mess.

Badboy22TR wrote:
Can any one suggest something or tell me that where i declare delegates?

Have you looked at the C++/CLI Beginner articles here on code project? They are highly recommended.

led mike

azigreci19-Feb-08 11:11

azigreci

19-Feb-08 11:11

MVC to pass data between forms??? Laugh | :laugh:

you will never understand this....

Get back in the Soapbox Kyle!

led mike19-Feb-08 11:33

How do I generate a System::Drawing::Color array?

19-Feb-08 11:33

led mike

Manfr3d18-Feb-08 9:11

Re: How do I generate a System::Drawing::Color array?

18-Feb-08 9:11

Hi guys,

I want to make an array that consists of system defined colors. I wrote the code
System::Drawing::Color Color1[]={Color::Black, Color::Brown, Color::Red};
what delivered the error
'System::Drawing::Color' : a native array cannot contain this managed type

Then I tried this version
Color Color1[] = __gc new Color[];
and I got this error
error C2440: 'initializing' : cannot convert from 'System::Drawing::Color ^' to 'System::Drawing::Color'

Has anyone an idea how to make this work?
Thanks and best wishes

Mark Salsbery18-Feb-08 10:14

Re: How do I generate a System::Drawing::Color array?

18-Feb-08 10:14

I would expect this to work...

Color Color1[] = __gc new Color[3];

What about this?

Color Color1 __gc[]= new Color __gc[3];

BTW, this is SO much nicer in VC 2005+ (without the managed extensions) Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Manfr3d19-Feb-08 0:37

Re: How do I generate a System::Drawing::Color array? [modified]

19-Feb-08 0:37

Thanks but this also doesn't work, it just causes more errors.

Mark Salsbery19-Feb-08 6:05

Re: How do I generate a System::Drawing::Color array?

19-Feb-08 6:05

Yeah you were trying to use managed extensions (old) syntax so I assumed you
were using VS 2002/2003 .NET.

Since you're not, use the new array syntax (no more __gc) as shown by David Anton.

array<Color> ^Color1 = gcnew array<Color><font color="Red">(</font>3<font color="Red">)</font>;

or

array<Color> ^Color1 = gcnew array<Color>{Color::Black, Color::Brown, Color::Red};

or

array<Color> ^Color1 = {Color::Black, Color::Brown, Color::Red};

Mark

*edit* Fixed the parenthesis above Roll eyes | :rolleyes:

Last modified: 3hrs 18mins after originally posted --

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Manfr3d19-Feb-08 7:32

Re: How do I generate a System::Drawing::Color array?

19-Feb-08 7:32

Hi Mark,

I tried each of your suggestions, which should, as far as I know, do the same and work, but each caused errors:

array<color> ^Color1 = gcnew array<color>[3];
error C2726: 'gcnew' may only be used to create an object with managed type

array<color> ^Color1 = gcnew array<color>{Color::Black, Color::Brown, Color::Red};
error C3145: 'Color1' : global or static variable may not have managed type 'cli::array<type> ^'
with
[
Type=System::Drawing::Color
]
may not declare a global or static variable, or a member of a native type that refers to objects in the gc heap
error C3145: '$S9' : global or static variable may not have managed type 'cli::array<type> ^'
with
[
Type=System::Drawing::Color
]
may not declare a global or static variable, or a member of a native type that refers to objects in the gc heap

array<color> ^Color1 = {Color::Black, Color::Brown, Color::Red};
error C3145: 'Color1' : global or static variable may not have managed type 'cli::array<type> ^'
with
[
Type=System::Drawing::Color
]
may not declare a global or static variable, or a member of a native type that refers to objects in the gc heap

I really don't know why this doesn't work.

Mark Salsbery19-Feb-08 7:47

Re: How do I generate a System::Drawing::Color array?

19-Feb-08 7:47

hehe WTH?

What version of Visual Studio are you using?? Are you compiling for clr?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Manfr3d19-Feb-08 8:55

Re: How do I generate a System::Drawing::Color array?

19-Feb-08 8:55

Well, I'm using Visual C++ Express Edition 2008.
What do you mean with compiling for clr?

Mark Salsbery19-Feb-08 9:17

Re: How do I generate a System::Drawing::Color array?

19-Feb-08 9:17

This is managed code, so you must use the /clr compiler switch
(Project settings/Configuration Properties/General/Common Language Runtime Support)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Mark Salsbery19-Feb-08 9:25

Re: How do I generate a System::Drawing::Color array? [modified]

19-Feb-08 9:25

Also, I fixed the code in my last post - maybe that will work better.

Sorry about that Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Dave Doknjas18-Feb-08 12:56

Dave Doknjas

18-Feb-08 12:56

From the error message, you are using C++/CLI, so what you want is:
array<system::drawing::color> ^Color1 = {Color::Black, Color::Brown, Color::Red};

(edited Feb 19 to ignore html tags)

David Anton
http://www.tangiblesoftwaresolutions.com
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modified on Tuesday, February 19, 2008 10:31 AM

Re: How do I generate a System::Drawing::Color array?

Mark Salsbery18-Feb-08 13:12

Re: How do I generate a System::Drawing::Color array?

18-Feb-08 13:12

Ack! Good eye - I don't know how many times I read it and missed the "^" LOL

Cheers,
Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Manfr3d19-Feb-08 0:40

Re: How do I generate a System::Drawing::Color array?

19-Feb-08 0:40

Thanks but it doesn't work. Frown | :(

Dave Doknjas19-Feb-08 4:31

Dave Doknjas

19-Feb-08 4:31

The code was mangled when posting (forgot to check "ignore html tags..").
It should be:
array<System::Drawing::Color> ^Color1 = {Color::Black, Color::Brown, Color::Red};

David Anton
http://www.tangiblesoftwaresolutions.com
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Crystal Report Error Message [modified]

mikobi18-Feb-08 4:35

Non document printing with Visual C++ 2005 NET

18-Feb-08 4:35

I load a report from my Visual c++ NEt program.
I have a error message : invalid report file path,evenif the report is in this directory
my code is bellow.

What can be the problem ?

SqlConnection^ cprl = gcnew SqlConnection();
cprl->ConnectionString = "Persist Security Info=False;Integrated Security=SSPI;database=payroll08;server=sem;Trusted_Connection=Yes;" ;
cprl->Open();
// Ds_report^ data = gcnew Ds_report();
DSENFANTS^ data = gcnew DSENFANTS();
SqlDataAdapter^ adapt = gcnew SqlDataAdapter();
SqlCommand^ Cmd = gcnew SqlCommand();
Cmd->CommandText = "select* from ficenf";
Cmd->CommandType = CommandType::Text;
Cmd->Connection = cprl;
adapt->SelectCommand::set(Cmd) ;
adapt->Fill(data,"enfants");
RDEnfants->SetDataSource(data);
RDEnfants->Load(L"c:\\GESTION\\payrollv2\\payrollv2\REPENFANTS.rpt");
//rptsearchsig->PrintToPrinter(1,true,0,65500);
RVENFANTS->ReportSource = RDEnfants;
//crystalReportViewer1->ReportSource = rptsearchsig;

modified on Monday, February 18, 2008 10:54 AM

mikobi14-Feb-08 20:21

Re: Non document printing with Visual C++ 2005 NET

14-Feb-08 20:21

Dear Sir,
I use Visual c++ Net 2005.
I need to know how we do the non document printing in Visual c++ NEt 2005.

Can you show me articles that talk about it ?

It's not Urgent but I need your Help

I learn my self

led mike15-Feb-08 4:25

Re: Non document printing with Visual C++ 2005 NET

15-Feb-08 4:25

mikobi wrote:
I learn my self

When? We are still waiting.

On the CodeProject menu under "Chapters" click "Desktop Development" then click "Printing"

led mike

mikobi19-Feb-08 2:01

To add items programmatically to Combobox

19-Feb-08 2:01

I did not yet see article that shows me how to print in Visual c++ 2005 NET.
I am blocked by this, I can't go far if I cannot print.

Who can Help me.

mikobi13-Feb-08 4:50

13-Feb-08 4:50

On my form I have one combobox that I need to fill data from my database.

I am using Visual c++ Net 2005
How can I make declaration and add items ?

Urgent

led mike13-Feb-08 6:43

13-Feb-08 6:43

mikobi wrote:
Urgent

The only thing that's urgent is you urgently need to stop trying to learn how to do EVERYTHING through internet forums. Most software developers go to university and read books to learn fundamentals of software development. If you refuse to learn fundamentals there is no hope you will ever be a capable developer.

led mike

mikobi13-Feb-08 18:28

13-Feb-08 18:28

Please Sir, I have not this opportunity to access that university, but I want to know. I learn my self Visual c++ 6.0 and I have made 4 programs .

As there are a new version I need to improve my programs.

led mike14-Feb-08 4:28

14-Feb-08 4:28

mikobi wrote:
I have not this opportunity to access that university

Then obtain some books or even find online courses or tutorials that target beginner programming.

led mike

mikobi13-Feb-08 18:35