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Peter Foot [MVP]
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This is not supported at all. If you need to use managed code from native
code you'll need to run your managed app and use an IPC method to exchange data with it. See Daniels posts on IPC methods:- http://www.danielmoth.com/Blog/2004/...ce-part-1.html Peter -- Peter Foot Device Application Development MVP www.peterfoot.net | www.inthehand.com <(E-Mail Removed)> wrote in message news:(E-Mail Removed)... > Hi > > I have been experimenting with writing managed libraries (C#/.NET 2.0) > for use in native applications with good results. This has been > achieved by disassembling the managed library, adding IL code to > export the required functions, and then using ILAsm to re-assemble > the .NET assembly. The IL code changes required are the following: > > .corflags 0x00000001 -> .corflags 0x00000002 > > Added: > .vtfixup [1] int32 fromunmanaged at VT_01 > .data VT_01 = int32(0) > > Added within exported function scope: > .vtentry 1 : 1 > .export [1] as Test > > After applying these changes, one can use the managed library as if it > was native, either from a native app, using LoadLibrary/ > GetProcAddress, or from a managed app using DllImport. > > Now when I do the same for a compact framework assembly and try to > load and execute a function from that managed library on Windows CE > 5.0, I get an access violation. > > I have confirmed that the code that loads the library is successful in > locating the exported lib function, so the access violation is either > in the lib function or somewhere in the glue between the native app > and the managed lib. The code for each follows: > > [Native application] > typedef void (*PFN_Test)(void); > void main() { > HINSTANCE hManagedLib = LoadLibrary(_T("CFManagedDLL.dll")); > if( hManagedLib ) { > PFN_Test exportedFunc = > (PFN_Test)GetProcAddress(hManagedLib, L"Test"); > if( exportedFunc != NULL) > exportedFunc(); > } > return 0; > } > > [Managed library] > using System; > using System.Collections.Generic; > using System.Text; > > namespace CFManagedDLL { > public class Class1 { > public static void Test() { > System.Console.Out.WriteLine("Compact Framework Managed > DLL"); > } > } > } > > [Altered IL Code for Managed library] > .assembly extern mscorlib > { > .publickeytoken = (96 9D B8 05 3D 33 22 > AC ) // ....=3". > .ver 2:0:0:0 > } > .assembly CFManagedDLL > { > .custom instance void > [mscorlib]System.Runtime.InteropServices.GuidAttribute::.ctor(string) > = ( 01 00 24 31 36 34 31 61 66 34 38 2D 65 37 63 62 // ..$1641af48- > e7cb > > 2D 34 61 64 31 2D 38 36 63 32 2D 66 62 37 32 36 // -4ad1-86c2-fb726 > > 34 39 34 62 66 65 30 00 00 ) // 494bfe0.. > .custom instance void > [mscorlib]System.Runtime.InteropServices.ComVisibleAttribute::.ctor(bool) > = ( 01 00 00 00 00 ) > .custom instance void > [mscorlib]System.Reflection.AssemblyTrademarkAttribute::.ctor(string) > = ( 01 00 00 00 00 ) > .custom instance void > [mscorlib]System.Reflection.AssemblyCopyrightAttribute::.ctor(string) > = ( 01 00 12 43 6F 70 79 72 69 67 68 74 20 C2 A9 > 20 // ...Copyright .. > > 20 32 30 30 37 00 00 ) // 2007.. > .custom instance void > [mscorlib]System.Reflection.AssemblyProductAttribute::.ctor(string) = > ( 01 00 0C 43 46 4D 61 6E 61 67 65 64 44 4C 4C > 00 // ...CFManagedDLL. > > 00 ) > .custom instance void > [mscorlib]System.Reflection.AssemblyCompanyAttribute::.ctor(string) = > ( 01 00 00 00 00 ) > .custom instance void > [mscorlib]System.Reflection.AssemblyConfigurationAttribute::.ctor(string) > = ( 01 00 00 00 00 ) > .custom instance void > [mscorlib]System.Reflection.AssemblyDescriptionAttribute::.ctor(string) > = ( 01 00 00 00 00 ) > .custom instance void > [mscorlib]System.Reflection.AssemblyTitleAttribute::.ctor(string) = > ( 01 00 0C 43 46 4D 61 6E 61 67 65 64 44 4C 4C > 00 // ...CFManagedDLL. > > 00 ) > > // --- The following custom attribute is added automatically, do not > uncomment ------- > // .custom instance void > [mscorlib]System.Diagnostics.DebuggableAttribute::.ctor(valuetype > [mscorlib]System.Diagnostics.DebuggableAttribute/DebuggingModes) = > ( 01 00 07 01 00 00 00 00 ) > > .hash algorithm 0x00008004 > .ver 1:0:2602:17354 > } > .module CFManagedDLL.dll > // MVID: {C072D8C7-8D33-477C-BB9C-275822BD1E76} > .imagebase 0x00400000 > .file alignment 0x00001000 > .stackreserve 0x00100000 > .subsystem 0x0009 // WINDOWS_CUI > .corflags 0x00000002 > .vtfixup [1] int32 fromunmanaged at VT_01 > .data VT_01 = int32(0) > // Image base: 0x005F0000 > > > // =============== CLASS MEMBERS DECLARATION =================== > > .class public auto ansi beforefieldinit CFManagedDLL.Class1 > extends [mscorlib]System.Object > { > .method public hidebysig static void Test() cil managed > { > .vtentry 1 : 1 > .export [1] as Test > // Code size 18 (0x12) > .maxstack 8 > IL_0000: nop > IL_0001: call class [mscorlib]System.IO.TextWriter > [mscorlib]System.Console::get_Out() > IL_0006: ldstr "Compact Framework Managed DLL" > IL_000b: callvirt instance void > [mscorlib]System.IO.TextWriter::WriteLine(string) > IL_0010: nop > IL_0011: ret > } // end of method Class1::Test > > .method public hidebysig specialname rtspecialname > instance void .ctor() cil managed > { > // Code size 7 (0x7) > .maxstack 8 > IL_0000: ldarg.0 > IL_0001: call instance void > [mscorlib]System.Object::.ctor() > IL_0006: ret > } // end of method Class1::.ctor > > } // end of class CFManagedDLL.Class1 > |
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dadi.armannss@gmail.com
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I know it is not officially supported, but you can do it in the
fullblown framework by manually creating a V-table and changing the header of the PE file (as shown in the accompanying IL code). Can you elaborate on which specific part is not possible on WinCE/.NET CF? On Mar 6, 9:51 pm, "Peter Foot [MVP]" <feedb...@nospam-inthehand.com> wrote: > This is not supported at all. If you need to use managed code from native > code you'll need to run your managed app and use an IPC method to exchange > data with it. See Daniels posts on IPC methods:-http://www.danielmoth.com/Blog/2004/09/ipc-with-cf-on-ce-part-1.html > > Peter > > -- > Peter Foot > Device Application Development MVPwww.peterfoot.net|www.inthehand.com > > <dadi.arman...@gmail.com> wrote in message > > news:(E-Mail Removed)... > > > Hi > > > I have been experimenting with writing managed libraries (C#/.NET 2.0) > > for use in native applications with good results. This has been > > achieved by disassembling the managed library, adding IL code to > > export the required functions, and then using ILAsm to re-assemble > > the .NET assembly. The IL code changes required are the following: > > > .corflags 0x00000001 -> .corflags 0x00000002 > > > Added: > > .vtfixup [1] int32 fromunmanaged at VT_01 > > .data VT_01 = int32(0) > > > Added within exported function scope: > > .vtentry 1 : 1 > > .export [1] as Test > > > After applying these changes, one can use the managed library as if it > > was native, either from a native app, using LoadLibrary/ > > GetProcAddress, or from a managed app using DllImport. > > > Now when I do the same for a compact framework assembly and try to > > load and execute a function from that managed library on Windows CE > > 5.0, I get an access violation. > > > I have confirmed that the code that loads the library is successful in > > locating the exported lib function, so the access violation is either > > in the lib function or somewhere in the glue between the native app > > and the managed lib. The code for each follows: > > > [Native application] > > typedef void (*PFN_Test)(void); > > void main() { > > HINSTANCE hManagedLib = LoadLibrary(_T("CFManagedDLL.dll")); > > if( hManagedLib ) { > > PFN_Test exportedFunc = > > (PFN_Test)GetProcAddress(hManagedLib, L"Test"); > > if( exportedFunc != NULL) > > exportedFunc(); > > } > > return 0; > > } > > > [Managed library] > > using System; > > using System.Collections.Generic; > > using System.Text; > > > namespace CFManagedDLL { > > public class Class1 { > > public static void Test() { > > System.Console.Out.WriteLine("Compact Framework Managed > > DLL"); > > } > > } > > } > > > [Altered IL Code for Managed library] > > .assembly extern mscorlib > > { > > .publickeytoken = (96 9D B8 05 3D 33 22 > > AC ) // ....=3". > > .ver 2:0:0:0 > > } > > .assembly CFManagedDLL > > { > > .custom instance void > > [mscorlib]System.Runtime.InteropServices.GuidAttribute::.ctor(string) > > = ( 01 00 24 31 36 34 31 61 66 34 38 2D 65 37 63 62 // ..$1641af48- > > e7cb > > > 2D 34 61 64 31 2D 38 36 63 32 2D 66 62 37 32 36 // -4ad1-86c2-fb726 > > > 34 39 34 62 66 65 30 00 00 ) // 494bfe0.. > > .custom instance void > > [mscorlib]System.Runtime.InteropServices.ComVisibleAttribute::.ctor(bool) > > = ( 01 00 00 00 00 ) > > .custom instance void > > [mscorlib]System.Reflection.AssemblyTrademarkAttribute::.ctor(string) > > = ( 01 00 00 00 00 ) > > .custom instance void > > [mscorlib]System.Reflection.AssemblyCopyrightAttribute::.ctor(string) > > = ( 01 00 12 43 6F 70 79 72 69 67 68 74 20 C2 A9 > > 20 // ...Copyright .. > > > 20 32 30 30 37 00 00 ) // 2007.. > > .custom instance void > > [mscorlib]System.Reflection.AssemblyProductAttribute::.ctor(string) = > > ( 01 00 0C 43 46 4D 61 6E 61 67 65 64 44 4C 4C > > 00 // ...CFManagedDLL. > > > 00 ) > > .custom instance void > > [mscorlib]System.Reflection.AssemblyCompanyAttribute::.ctor(string) = > > ( 01 00 00 00 00 ) > > .custom instance void > > [mscorlib]System.Reflection.AssemblyConfigurationAttribute::.ctor(string) > > = ( 01 00 00 00 00 ) > > .custom instance void > > [mscorlib]System.Reflection.AssemblyDescriptionAttribute::.ctor(string) > > = ( 01 00 00 00 00 ) > > .custom instance void > > [mscorlib]System.Reflection.AssemblyTitleAttribute::.ctor(string) = > > ( 01 00 0C 43 46 4D 61 6E 61 67 65 64 44 4C 4C > > 00 // ...CFManagedDLL. > > > 00 ) > > > // --- The following custom attribute is added automatically, do not > > uncomment ------- > > // .custom instance void > > [mscorlib]System.Diagnostics.DebuggableAttribute::.ctor(valuetype > > [mscorlib]System.Diagnostics.DebuggableAttribute/DebuggingModes) = > > ( 01 00 07 01 00 00 00 00 ) > > > .hash algorithm 0x00008004 > > .ver 1:0:2602:17354 > > } > > .module CFManagedDLL.dll > > // MVID: {C072D8C7-8D33-477C-BB9C-275822BD1E76} > > .imagebase 0x00400000 > > .file alignment 0x00001000 > > .stackreserve 0x00100000 > > .subsystem 0x0009 // WINDOWS_CUI > > .corflags 0x00000002 > > .vtfixup [1] int32 fromunmanaged at VT_01 > > .data VT_01 = int32(0) > > // Image base: 0x005F0000 > > > // =============== CLASS MEMBERS DECLARATION =================== > > > .class public auto ansi beforefieldinit CFManagedDLL.Class1 > > extends [mscorlib]System.Object > > { > > .method public hidebysig static void Test() cil managed > > { > > .vtentry 1 : 1 > > .export [1] as Test > > // Code size 18 (0x12) > > .maxstack 8 > > IL_0000: nop > > IL_0001: call class [mscorlib]System.IO.TextWriter > > [mscorlib]System.Console::get_Out() > > IL_0006: ldstr "Compact Framework Managed DLL" > > IL_000b: callvirt instance void > > [mscorlib]System.IO.TextWriter::WriteLine(string) > > IL_0010: nop > > IL_0011: ret > > } // end of method Class1::Test > > > .method public hidebysig specialname rtspecialname > > instance void .ctor() cil managed > > { > > // Code size 7 (0x7) > > .maxstack 8 > > IL_0000: ldarg.0 > > IL_0001: call instance void > > [mscorlib]System.Object::.ctor() > > IL_0006: ret > > } // end of method Class1::.ctor > > > } // end of class CFManagedDLL.Class1 |
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Tomer Gabel
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Hello (E-Mail Removed),
I'd venture a guess that the full framework contains a host component, and ..NET PEs contain a stub that when run under Win32 (i.e. with the full framework around) trigger that host when they attach to the parent process (DLL_PROCESS_ATTACH/DLL_PROCESS_DETACH). If this is the case, I'd imagine the CF team chose (wisely) not to include the feature, since it seems (at least to me) problematic at best and useless at worst. Regards, Tomer Gabel (http://www.tomergabel.com) Monfort Software Engineering Ltd. (http://www.monfort.co.il) > I know it is not officially supported, but you can do it in the > fullblown framework by manually creating a V-table and changing the > header of the PE file (as shown in the accompanying IL code). Can you > elaborate on which specific part is not possible on WinCE/.NET CF? > > On Mar 6, 9:51 pm, "Peter Foot [MVP]" <feedb...@nospam-inthehand.com> > wrote: > >> This is not supported at all. If you need to use managed code from >> native >> >> code you'll need to run your managed app and use an IPC method to >> exchange >> >> data with it. See Daniels posts on IPC >> methods:-http://www.danielmoth.com/Blog/2004/09/ipc-with-cf-on-ce-par >> t-1.html >> >> Peter >> >> -- >> Peter Foot >> Device Application Development MVPwww.peterfoot.net|www.inthehand.com >> <dadi.arman...@gmail.com> wrote in message >> >> news:(E-Mail Removed)... >> >>> Hi >>> >>> I have been experimenting with writing managed libraries (C#/.NET >>> 2.0) >>> for use in native applications with good results. This has been >>> achieved by disassembling the managed library, adding IL code to >>> export the required functions, and then using ILAsm to re-assemble >>> the .NET assembly. The IL code changes required are the following: >>> .corflags 0x00000001 -> .corflags 0x00000002 >>> >>> Added: >>> .vtfixup [1] int32 fromunmanaged at VT_01 >>> .data VT_01 = int32(0) >>> Added within exported function scope: >>> .vtentry 1 : 1 >>> .export [1] as Test >>> After applying these changes, one can use the managed library as if >>> it was native, either from a native app, using LoadLibrary/ >>> GetProcAddress, or from a managed app using DllImport. >>> >>> Now when I do the same for a compact framework assembly and try to >>> load and execute a function from that managed library on Windows CE >>> 5.0, I get an access violation. >>> >>> I have confirmed that the code that loads the library is successful >>> in locating the exported lib function, so the access violation is >>> either in the lib function or somewhere in the glue between the >>> native app and the managed lib. The code for each follows: >>> >>> [Native application] >>> typedef void (*PFN_Test)(void); >>> void main() { >>> HINSTANCE hManagedLib = LoadLibrary(_T("CFManagedDLL.dll")); >>> if( hManagedLib ) { >>> PFN_Test exportedFunc = >>> (PFN_Test)GetProcAddress(hManagedLib, L"Test"); >>> if( exportedFunc != NULL) >>> exportedFunc(); >>> } >>> return 0; >>> } >>> [Managed library] >>> using System; >>> using System.Collections.Generic; >>> using System.Text; >>> namespace CFManagedDLL { >>> public class Class1 { >>> public static void Test() { >>> System.Console.Out.WriteLine("Compact Framework Managed >>> DLL"); >>> } >>> } >>> } >>> [Altered IL Code for Managed library] >>> .assembly extern mscorlib >>> { >>> .publickeytoken = (96 9D B8 05 3D 33 22 >>> AC ) // ....=3". >>> .ver 2:0:0:0 >>> } >>> .assembly CFManagedDLL >>> { >>> .custom instance void >>> [mscorlib]System.Runtime.InteropServices.GuidAttribute::.ctor(string >>> ) >>> = ( 01 00 24 31 36 34 31 61 66 34 38 2D 65 37 63 62 // >>> ..$1641af48- >>> e7cb >>> 2D 34 61 64 31 2D 38 36 63 32 2D 66 62 37 32 36 // >>> -4ad1-86c2-fb726 >>> >>> 34 39 34 62 66 65 30 00 00 ) // 494bfe0.. >>> .custom instance void >>> [mscorlib]System.Runtime.InteropServices.ComVisibleAttribute::.ctor( >>> bool) >>> = ( 01 00 00 00 00 ) >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyTrademarkAttribute::.ctor(string >>> ) >>> = ( 01 00 00 00 00 ) >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyCopyrightAttribute::.ctor(string >>> ) >>> = ( 01 00 12 43 6F 70 79 72 69 67 68 74 20 C2 A9 >>> 20 // ...Copyright .. >>> 20 32 30 30 37 00 00 ) // 2007.. >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyProductAttribute::.ctor(string) >>> = >>> ( 01 00 0C 43 46 4D 61 6E 61 67 65 64 44 4C 4C >>> 00 // ...CFManagedDLL. >>> 00 ) >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyCompanyAttribute::.ctor(string) >>> = >>> ( 01 00 00 00 00 ) >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyConfigurationAttribute::.ctor(st >>> ring) >>> = ( 01 00 00 00 00 ) >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyDescriptionAttribute::.ctor(stri >>> ng) >>> = ( 01 00 00 00 00 ) >>> .custom instance void >>> [mscorlib]System.Reflection.AssemblyTitleAttribute::.ctor(string) = >>> ( 01 00 0C 43 46 4D 61 6E 61 67 65 64 44 4C 4C >>> 00 // ...CFManagedDLL. >>> 00 ) >>> >>> // --- The following custom attribute is added automatically, do not >>> uncomment ------- >>> // .custom instance void >>> [mscorlib]System.Diagnostics.DebuggableAttribute::.ctor(valuetype >>> [mscorlib]System.Diagnostics.DebuggableAttribute/DebuggingModes) = >>> ( 01 00 07 01 00 00 00 00 ) >>> .hash algorithm 0x00008004 >>> .ver 1:0:2602:17354 >>> } >>> .module CFManagedDLL.dll >>> // MVID: {C072D8C7-8D33-477C-BB9C-275822BD1E76} >>> .imagebase 0x00400000 >>> .file alignment 0x00001000 >>> .stackreserve 0x00100000 >>> .subsystem 0x0009 // WINDOWS_CUI >>> .corflags 0x00000002 >>> .vtfixup [1] int32 fromunmanaged at VT_01 >>> .data VT_01 = int32(0) >>> // Image base: 0x005F0000 >>> // =============== CLASS MEMBERS DECLARATION =================== >>> >>> .class public auto ansi beforefieldinit CFManagedDLL.Class1 >>> extends [mscorlib]System.Object >>> { >>> .method public hidebysig static void Test() cil managed >>> { >>> .vtentry 1 : 1 >>> .export [1] as Test >>> // Code size 18 (0x12) >>> .maxstack 8 >>> IL_0000: nop >>> IL_0001: call class [mscorlib]System.IO.TextWriter >>> [mscorlib]System.Console::get_Out() >>> IL_0006: ldstr "Compact Framework Managed DLL" >>> IL_000b: callvirt instance void >>> [mscorlib]System.IO.TextWriter::WriteLine(string) >>> IL_0010: nop >>> IL_0011: ret >>> } // end of method Class1::Test >>> .method public hidebysig specialname rtspecialname >>> instance void .ctor() cil managed >>> { >>> // Code size 7 (0x7) >>> .maxstack 8 >>> IL_0000: ldarg.0 >>> IL_0001: call instance void >>> [mscorlib]System.Object::.ctor() >>> IL_0006: ret >>> } // end of method Class1::.ctor >>> } // end of class CFManagedDLL.Class1 >>> |
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