Search DaniWeb - ref

ref to struct? 12 Years Ago by pseudorandom21 Hi I have a struct in my form, and I need to pass a reference/handle to it to a separate class, which is ok with the simple "ref" keyword. Now, how do I store this ref to a struct in the class (as a member variable)? Is this possible? I hope so... ref class constructor issues 12 Years Ago by jonnyboy12 … started using the gcnew instead of new for the public ref class, that i have needed to learn for windows forms… slots in the method. It looks like this. [CODE] public ref class vector2{ public: System::String ^x; System::String ^y; System… REF Data type 14 Years Ago by ntagrafix … three object types in part a). In particular: use the REF data type to implement the relationships between the types, and… how can I show the file path instead of ref 15 Years Ago by ahmedo047 …i1 = 0, i = 0, j = 0 ; input(ref ok,ref fx,ref ft,ref alpha,ref n,ref m); if (ok) { m1 = m - 1; m2 …f; } private void input(ref bool ok,ref double fx, ref double ft, ref double alpha, ref int n, ref int m ) { Console.Write… Re: how can I show the file path instead of ref 15 Years Ago by ahmedo047 … = 0, i = 0, j = 0 ; input(ref ok,ref fx,ref ft,ref alpha,ref n,ref m); if (ok) { m1 = m - 1; … f; } private void input(ref bool ok,ref double fx, ref double ft, ref double alpha, ref int n, ref int m ) { try … Re: how can I show the file path instead of ref 15 Years Ago by ahmedo047 …i1 = 0, i = 0, j = 0; input(ref ok, ref fx, ref ft, ref alpha, ref n, ref m); if (ok) { m1 = m - 1; …f; } private void input(ref bool ok, ref double fx, ref double ft, ref double alpha, ref int n, ref int m) { try {… A property or indexer may not be passed as an out or ref parameter 10 Years Ago by borgasia … col]; curRange.Value = type + "Component Summary"; FormatRange(ref curRange, 10, "Green", true, false, false, XlHAlign.xlHAlignLeft….Font.Underline = true; curRange.Offset[1, 0].Value = "Ref-Desig"; curRange.Offset[1, 1].Value = "Part Number… How can I XML serialize the following Ref class with delegates? 13 Years Ago by DaveTran …/// For XML Serialization /// </summary> private Ref() { } public Ref(Func<T> getter, Action<T>… how can I correctly serialize and deserialize the Ref<float> class? I've been playing…= typeof(Func<>).MakeGenericType(new Type[] { typeof(Ref<float>) }); [/code] but I haven't … passing Null to ref 12 Years Ago by saneeha.nust …ref DATA_BLOB pDataIn, String szDataDescr, ref DATA_BLOB pOptionalEntropy, IntPtr pvReserved, ref CRYPTPROTECT_PROMPTSTRUCT pPromptStruct, CryptProtectFlags dwFlags, ref …quot;CRYPTPROTECT_PROMPTSTRUCT pPromptStruct" requires a ref to structure, but i need to … declare local ref types? 11 Years Ago by Jsplinter If I have a function that takes a ref argument like: void Foo(ref int i, int b, int c){ i…} and I want to call that function with the ref int i argument determined conditionally: int q, r; bool… bTest; //... if (bTest) { bar(ref q,1,2); } else { bar(ref r,1,2); } is it possible to… Re: Multiple ref Parameters 13 Years Ago by Ionelul …, than you use have to pass it with ref keyword. Example1 : [code] private void MainFunction…the same case as passing an int without ref keyword } private void RouletteSelection(Chromosome child1,…created object in RouletteSelection } private void RouletteSelection(ref Chromosome child1,ref Chromosome child2) { Chromosome child = new… Re: Multiple ref Parameters 13 Years Ago by kendaop …child1, child2; child1 = child2 = new Chromosome(CHROMOSOME_LENGTH); RouletteSelection(ref child1, ref child2); using (FileStream fileStream = new FileStream(fileName, FileMode.…my RouletteSelection method: [code=c#] private void RouletteSelection(ref Chromosome child1, ref Chromosome child2) { double target = random.NextDouble()… Re: A property or indexer may not be passed as an out or ref parameter 10 Years Ago by deceptikon The error is very clear, you can't have a `ref` parameter that's a property. Copy the value of the property into a temporary variable, then after the method returns, copy that temporary variable's value back to the propery. nested class requires ref keyword 14 Years Ago by serkan sendur …nestedClass = new ContainerClass.NestedClass("something"); UseWithRefKeyword(ref nestedClass); MessageBox.Show(nestedClass.GetField()); } private void…); MessageBox.Show(nestedClass.GetField()); } private void UseWithRefKeyword(ref ContainerClass.NestedClass nestedClass) { nestedClass = new ContainerClass.NestedClass… Using C# ref keyword, but outside of method signature 8 Years Ago by Sphinx'LostNose …Main(string[] args) { Object origObj = new Object(); ExampleMethod(ref origObj); } void ExampleMethod(ref Object newObj) { //origObj will also reference the newly created… // something that would mean the same as the following line: ref origObj = ref newObj; // origObj also should reference the new object with… convert from 'ref double[]' to 'ref object' 18 Years Ago by wakeup … C# I have a method with a parametr of "ref object" type (in C++ is a VARIANT* I convert… throws me this error: Argument '3': cannot convert from 'ref double[]' to 'ref object' If I create object x =null; And after… Re: Unit testing - Invoking PrivateObject with ref params 14 Years Ago by Antenka … that, that might be a problem with boxing of a ref-type variable when passing it in parameters list (by the… way, have you tried passing it as "ref intReturnValue", rather than as "intReturnValue"). Anyways - take…stackoverflow.com/questions/2475310/c-4-0-dynamic-doesnt-set-ref-out-arguments]C# 4.0 ‘dynamic’ doesn’t set… passing by ref in foreach 16 Years Ago by jonesc5 … loop. "Cannot pass 'currentphoto' as a ref or out argument because it is a 'foreach iteration…(photo currentphoto in thephotos){ panel1.Controls.Add(new thumbnailPicture(ref currentphoto)); } I'm 100% sure that passing by… turning it into a while loop and using ref thephotos[x] and that gives the same error… Unit testing - Invoking PrivateObject with ref params 14 Years Ago by pilsdumps …test for a protected method that contains a ref parameter. The method to test looks like… this: [CODE] protected void Select(ref int? intReturnValue, ModelBase modelbase) { ...some code....…problem is that despite passing the intReturnValue by ref using the MakeByRefType() method (or at least… Re: convert from 'ref double[]' to 'ref object' 13 Years Ago by aptechit Hi, I just converted a code of VB.Net in C#. and m getting error while passing variable names or value [CODE]Error :Argument '1': cannot convert from 'ref double' to 'ref object' [/CODE] kindly help me to solve this error.. Multiple ref Parameters 13 Years Ago by kendaop … same method? For example, [code=c#] private void RouletteSelection(ref Chromosome child1, ref Chromosome child2) { ... ... ... } [/code] I'm not getting any compiler… Need help in returning a ref cursor from oracle stored function to vb.net 12 Years Ago by sunny124 … = True Then 'Me.ListBox1.Items.Add("value in ref cursor") 'Me.ListBox1.Items.Add("Location ID Max…code** / Create or replace package a2Package1 is Type refCursor is ref cursor; Function a2GetAllProdLocs Return refCursor; Function a2GetAllAudit return refCursor; End… Re: Using C# ref keyword, but outside of method signature 8 Years Ago by Sphinx'LostNose … object(); //origObj != newObj Whereas, when using a method and the ref keyword, then again do this, they will continue to reference… the same object: void methodA(ref newObj) { newObj = new object(); } //origObj == newObj… Re: passing by ref in foreach 16 Years Ago by jonesc5 … in thephotos){ photo tempphoto = currentphoto; panel1.Controls.Add(new thumbnailPicture(ref tempphoto)); } [/code] if there is a better way of doing… Re: passing by ref in foreach 16 Years Ago by Ramy Mahrous It's C# compiler restriction [QUOTE]Cannot pass 'currentphoto' as a ref or out argument because it is a 'foreach iteration variable'[/QUOTE] and your solution is good to avoid this restriction. Re: [split] convert from double* to ref double 13 Years Ago by nick.crane …, pass the first element of the array by ref. E.g. [iCODE]axCDFLAN.XferCommand(ref myFreqArray[0])[/iCODE] As this is a… Re: Multiple ref Parameters 13 Years Ago by CloneXpert Hey, Actually it's absolutely normal, you can use multiple ref. :) Re: [split] convert from double* to ref double 13 Years Ago by andisheh1362 … C# ,it say i mus use ref double for parameters. like this: axCDFLAN.XferCommand(ref double). but i dont want this becauase… Creating a ref to a string ? 16 Years Ago by StrikerX11 Hi, How can i create a ref to a string ? it doesn't work like lists :S … A property or indexer may not be passed as an out or ref parameter 14 Years Ago by serkan sendur why cant i pass property as ref parameter?