Managed C++/CLI

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Defenition of library function Shamnar1-Aug-06 1:03 Shamnar 1-Aug-06 1:03  Hi Experts, As i am a beginer in C++ i met with a confusion. I would like to know where the actual defention of library function is present. For eg: the defention of strlen(). Is it present in string.h. Or just the declaration only present in the string.h. please clrify my doubts. Thanking you Shamnar shamnar Re: Defenition of library function toxcct1-Aug-06 2:26 toxcct 1-Aug-06 2:26  strlen() is defined in the C runtime. it is not a function you should use in C++/CLI. TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] Re: Defenition of library function NrmMyth1-Aug-06 4:47 NrmMyth 1-Aug-06 4:47  I think you can't find the definition because they are compiled into library files. Re: Defenition of library function Shamnar1-Aug-06 18:17 Shamnar 1-Aug-06 18:17  thnks to both of u for spending your valuable time to reply a simple question like this. Shamnar shamnar How to get the size of reference type structures engsrini31-Jul-06 22:09 engsrini 31-Jul-06 22:09  Hello all, How to get the size of reference type stucture, ref Innerstruct<br /> {<br /> unsigned int j;<br /> bool bl;<br /> };<br /> ref stuct sample<br /> {<br /> int i;<br /> Byte b;<br /> Innerstruct st;<br /> };<br /> <br /> sample s=gcnew sample;<br /> int length=sizeof(s); this returns 4, i thing it is the size of pointer. how to get the orginal size of structure and its members creating special relations between tables yiwpyos31-Jul-06 5:55 yiwpyos 31-Jul-06 5:55  Hi everyone! I have an Access table made up of various "ingredients". From this table by selecting various "ingredients" i want to create another table (or just create new entries in another table) of "recipe" names and store this table in the same or another Access file. I am connecting to the ingredients table and filling a dataset with it, through a DataAdapter, then i'm displaying the contents in a DataGrid in which i've added a CheckBox column. I'm planning to use this checkbox column to select the ingredients for the various recipes. I know i can link such tables by using a column in the ingredients table which will specify a recipe name for each ingredient. However my problem is that some of the recipes will share the same ingredients so i can't use such a column to create the relationship. Any ideas on the way to tackle this problem? Thanks in advance. george Re: creating special relations between tables yiwpyos2-Aug-06 22:35 yiwpyos 2-Aug-06 22:35  Hi everyone, I think i posted this one in the wrong Forum, so i posted it in the SQL/ADO/ADO.NET forum and got my answer thanks to ToddHileHoffer. Will use three tables, one for the "recipes", one for the "ingredients" and one for the "recipeingredients" and the relation will be between the recipes table and the recipeingredients table. Just in case anyone else was wandering. : ) cheeriooooo! george george How to cast pointer from one type to another type aloktambi31-Jul-06 2:05 aloktambi 31-Jul-06 2:05  i want to typecast System::Byte* to class type pointer __gc class Update {public: unsigned short Posn; short Pres; short Temp1; short Temp2; Byte status; }; Byte *data; i am receieving data from one function i want to typecast this Byte pointer to Update class pointer type. how it is possible in managed c++ Re: How to cast pointer from one type to another type HZ_7931-Jul-06 4:02 HZ_79 31-Jul-06 4:02  Hi, I am not an expert, but I think the code below or a similar code should match: Update* upd = new Update(); upd->Posn = data[0] + 256*data[1]; upd->Pres = data[2] + 256*data[3]; upd->Temp1= data[4] + 256*data[5]; upd->Temp2= data[6] + 256*data[7]; upd->status=data[8]; This is a simple way to do your cast by hand. Thanks, HZ Re: How to cast pointer from one type to another type NrmMyth31-Jul-06 19:57 NrmMyth 31-Jul-06 19:57  Create a copy constructor Re: How to cast pointer from one type to another type aloktambi31-Jul-06 20:55 aloktambi 31-Jul-06 20:55  but sir __gc class shall not declare a user-defined copy constructor,How to possible to create copy constructor Calling old syntax from unmanged compiled as new syntax HZ_7930-Jul-06 23:37 HZ_79 30-Jul-06 23:37  I have to call some code written in a project compiled as old syntax /clr:oldsyntax, from an unmanaged zone in a project compiled with the option /clr (new syntax). Is this possible? the compiler generates C3699: Cannot use this indirection when I tried to use gcroot<MyForm*>. I don't have the time to convert the code compiled in old syntax to new syntax. Thanks, HZ Re: Calling old syntax from unmanged compiled as new syntax Milton Karimbekallil31-Jul-06 23:57 Milton Karimbekallil 31-Jul-06 23:57  There is no alternative other than converting all managed c++ syntax to c++/cli if u need to compile it with /clr new syntax. cheers...milton Kb which is better vc++ 6.0 or vc++.NET bhag30-Jul-06 22:59 bhag 30-Jul-06 22:59  which is better vc++ 6.0 or vc++.NET .based on performance, speed and portability? bhag Re: which is better vc++ 6.0 or vc++.NET [modified] toxcct30-Jul-06 23:10 toxcct 30-Jul-06 23:10  definitely, VC2003, as the compiler is much more compliant to the standard (but not as much as VC2005 though). however, as you're asking on the managed C++ forum, let me warn you about the fact that VC6 don't allow you to code for the .NET framework. ps: can someone explain what's wrong with what i said there ? -- modified at 5:25 Monday 31st July, 2006 TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] Re: which is better vc++ 6.0 or vc++.NET bhag30-Jul-06 23:29 bhag 30-Jul-06 23:29  thanx. but the thing is that my mentor has asked me to decide which is better for engineering purposes..i mean it deals with graphics , data entry like that.. bhag Re: which is better vc++ 6.0 or vc++.NET toxcct30-Jul-06 23:34 toxcct 30-Jul-06 23:34  VC2003 ! TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] [Message Deleted] devvvy30-Jul-06 18:10 devvvy 30-Jul-06 18:10  [Message Deleted] Hey, choose the correct forum Richard Andrew x6430-Jul-06 20:30 Richard Andrew x64 30-Jul-06 20:30  This forum is for managed C++, try the native C++ forum. Re: hey can't compile this driver sample... toxcct30-Jul-06 23:11 toxcct 30-Jul-06 23:11  crap TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] Right shift/Left shift + 1's compliment concepts Nada Adel30-Jul-06 1:51 Nada Adel 30-Jul-06 1:51  Can anyone give the output of this:- i = 10; int j = i >> 10; cout< Re: Right shift/Left shift + 1's compliment concepts Christian Graus30-Jul-06 15:41 Christian Graus 30-Jul-06 15:41  duh. Why do you want us to ? What's your actual question ? Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog Re: Right shift/Left shift + 1's compliment concepts toxcct30-Jul-06 23:12 toxcct 30-Jul-06 23:12  you might need some binary stuff to learn... TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] Re: Right shift/Left shift + 1's compliment concepts NrmMyth1-Aug-06 4:49 NrmMyth 1-Aug-06 4:49  NULL, every one-bit is shifted of the block. Re: Right shift/Left shift + 1's compliment concepts gdoupanguoqing12-Aug-06 11:04 gdoupanguoqing 12-Aug-06 11:04  =1/128+1/512=0.0078125+0.001953125=0.009765625 right or wrong? I love this web

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