如何创建自己的NEW命令

LoveArx

Question
How can I write my own NEW command without using acedCommand()?

Answer
There is no API exposed directly for the NEW command, but you can simulate it
fairly closely. The idea is to copy the DWT file you want to use as a template
into your destination file (for example, "Drawing.dwg"), and then open it using
acedSyncFileOpen().

The disadvantage of this approach is that the drawing will have a file name
(if you create a NEW drawing normally, it will actually perform a SAVEAS when
you first have to SAVE it - this new way of defining your NEW command means
the drawing has a name when it is opened).

[it618postdisplay>0]

1. // NewDwg.cpp : Initialization functions
   
2. #include "StdAfx.h"
   
3. #include "StdArx.h"
   
4. #include "resource.h"HINSTANCE _hdllInstance =NULL ;// This command registers an ARX command.
   
5. void AddCommand(const char* cmdGroup, const char* cmdInt, const char* cmdLoc,
   
6.     const int cmdFlags, const AcRxFunctionPtr cmdProc, const int idLocal = -1);// NOTE: DO NOT edit the following lines.
   
7. //{{AFX_ARX_MSG
   
8. void InitApplication();
   
9. void UnloadApplication();
   
10. //}}AFX_ARX_MSG// NOTE: DO NOT edit the following lines.
    
11. //{{AFX_ARX_ADDIN_FUNCS
    
12. //}}AFX_ARX_ADDIN_FUNCS
    
13. /////////////////////////////////////////////////////////////////////////////
    
14. // DLL Entry Point
    
15. extern "C"
    
16. BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /*lpReserved*/)
    
17. {
    
18.    if (dwReason == DLL_PROCESS_ATTACH){
    
19.       _hdllInstance = hInstance;
    
20.    }
    
21.    else if (dwReason == DLL_PROCESS_DETACH) {
    
22.    }
    
23.    return TRUE;    // ok
    
24. } /////////////////////////////////////////////////////////////////////////////
    
25. // ObjectARX EntryPoint
    
26. extern "C" AcRx::AppRetCode
    
27. acrxEntryPoint(AcRx::AppMsgCode msg, void* pkt)
    
28. {
    
29.    switch (msg) {
    
30.       case AcRx::kInitAppMsg:
    
31.          // Comment out the following line if your
    
32.          // application should be locked into memory
    
33.          acrxDynamicLinker->unlockApplication(pkt);
    
34.          acrxDynamicLinker->registerAppMDIAware(pkt);
    
35.          InitApplication();
    
36.          break;
    
37.       case AcRx::kUnloadAppMsg:
    
38.          UnloadApplication();
    
39.          break;
    
40.    }
    
41.    return AcRx::kRetOK;
    
42. }// Init this application. Register your
    
43. // commands, reactors...
    
44. void InitApplication()
    
45. {
    
46.    // NOTE: DO NOT edit the following lines.
    
47.    //{{AFX_ARX_INIT
    
48.    AddCommand("ASDKMYNEW", "MYNEW", "MYNEW", ACRX_CMD_MODAL, mynewmynew);
    
49.    //}}AFX_ARX_INIT   // TODO: add your initialization functions}// Unload this application. Unregister all objects
    
50. // registered in InitApplication.
    
51. void UnloadApplication()
    
52. {
    
53.    // NOTE: DO NOT edit the following lines.
    
54.    //{{AFX_ARX_EXIT
    
55.    acedRegCmds->removeGroup("ASDKMYNEW");
    
56.    //}}AFX_ARX_EXIT   // TODO: clean up your application
    
57. }// This functions registers an ARX command.
    
58. // It can be used to read the localized command name
    
59. // from a string table stored in the resources.
    
60. void AddCommand(const char* cmdGroup, const char* cmdInt, const char* cmdLoc,
    
61.   const int cmdFlags, const AcRxFunctionPtr cmdProc, const int idLocal)
    
62. {
    
63.    char cmdLocRes[65];   // If idLocal is not -1, it's treated as an ID for
    
64.    // a string stored in the resources.
    
65.    if (idLocal != -1) {      // Load strings from the string table and register the command.
    
66.       ::LoadString(_hdllInstance, idLocal, cmdLocRes, 64);
    
67.       acedRegCmds->addCommand(cmdGroup, cmdInt, cmdLocRes, cmdFlags, cmdProc);   }
    
68.    else
    
69.       // idLocal is -1, so the 'hard coded'
    
70.       // localized function name is used.
    
71.       acedRegCmds->addCommand(cmdGroup, cmdInt, cmdLoc, cmdFlags, cmdProc);
    
72. } // NewDwgCommands.cpp
    
73. // ObjectARX defined command#include "StdAfx.h"
    
74. #include "StdArx.h"// This is command 'MYNEW'

// NewDwg.cpp : Initialization functions<br /> #include "StdAfx.h"<br /> #include "StdArx.h"<br /> #include "resource.h"HINSTANCE _hdllInstance =NULL ;// This command registers an ARX command.<br /> void AddCommand(const char* cmdGroup, const char* cmdInt, const char* cmdLoc,<br />     const int cmdFlags, const AcRxFunctionPtr cmdProc, const int idLocal = -1);// NOTE: DO NOT edit the following lines.<br /> //{{AFX_ARX_MSG<br /> void InitApplication();<br /> void UnloadApplication();<br /> //}}AFX_ARX_MSG// NOTE: DO NOT edit the following lines.<br /> //{{AFX_ARX_ADDIN_FUNCS<br /> //}}AFX_ARX_ADDIN_FUNCS<br /> /////////////////////////////////////////////////////////////////////////////<br /> // DLL Entry Point<br /> extern "C"<br /> BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID /*lpReserved*/)<br /> {<br />    if (dwReason == DLL_PROCESS_ATTACH){<br />       _hdllInstance = hInstance;<br />    }<br />    else if (dwReason == DLL_PROCESS_DETACH) {<br />    }<br />    return TRUE;    // ok<br /> } /////////////////////////////////////////////////////////////////////////////<br /> // ObjectARX EntryPoint<br /> extern "C" AcRx::AppRetCode<br /> acrxEntryPoint(AcRx::AppMsgCode msg, void* pkt)<br /> {<br />    switch (msg) {<br />       case AcRx::kInitAppMsg:<br />          // Comment out the following line if your<br />          // application should be locked into memory<br />          acrxDynamicLinker->unlockApplication(pkt);<br />          acrxDynamicLinker->registerAppMDIAware(pkt);<br />          InitApplication();<br />          break;<br />       case AcRx::kUnloadAppMsg:<br />          UnloadApplication();<br />          break;<br />    }<br />    return AcRx::kRetOK;<br /> }// Init this application. Register your<br /> // commands, reactors...<br /> void InitApplication()<br /> {<br />    // NOTE: DO NOT edit the following lines.<br />    //{{AFX_ARX_INIT<br />    AddCommand("ASDKMYNEW", "MYNEW", "MYNEW", ACRX_CMD_MODAL, mynewmynew);<br />    //}}AFX_ARX_INIT   // TODO: add your initialization functions}// Unload this application. Unregister all objects<br /> // registered in InitApplication.<br /> void UnloadApplication()<br /> {<br />    // NOTE: DO NOT edit the following lines.<br />    //{{AFX_ARX_EXIT<br />    acedRegCmds->removeGroup("ASDKMYNEW");<br />    //}}AFX_ARX_EXIT   // TODO: clean up your application<br /> }// This functions registers an ARX command.<br /> // It can be used to read the localized command name<br /> // from a string table stored in the resources.<br /> void AddCommand(const char* cmdGroup, const char* cmdInt, const char* cmdLoc,<br />   const int cmdFlags, const AcRxFunctionPtr cmdProc, const int idLocal)<br /> {<br />    char cmdLocRes[65];   // If idLocal is not -1, it's treated as an ID for<br />    // a string stored in the resources.<br />    if (idLocal != -1) {      // Load strings from the string table and register the command.<br />       ::LoadString(_hdllInstance, idLocal, cmdLocRes, 64);<br />       acedRegCmds->addCommand(cmdGroup, cmdInt, cmdLocRes, cmdFlags, cmdProc);   }<br />    else<br />       // idLocal is -1, so the 'hard coded'<br />       // localized function name is used.<br />       acedRegCmds->addCommand(cmdGroup, cmdInt, cmdLoc, cmdFlags, cmdProc);<br /> } // NewDwgCommands.cpp<br /> // ObjectARX defined command#include "StdAfx.h"<br /> #include "StdArx.h"// This is command 'MYNEW'

[/it618postdisplay]

1. void mynewmynew()
   
2. {
   
3.    // TODO: Implement the command
   
4.    const TCHAR newFile[] = "Drawing.dwg";
   
5.    const TCHAR dwtFile[] = "Template\\Acad.dwt";
   
6.    TCHAR dwtPath [ MAX_PATH ], *pLastSlash = NULL;
   
7.    HMODULE hAcad = NULL;
   
8.    // Get the Template file/pathname by:
   
9.    //     get the pathname of the AutoCAD executable
   
10.    //     find the final backslash
    
11.    //     copy the template directory name and the template filename (e.g."Template\\Acad.dwt")
    
12.    //       onto this path after the final backslash
    
13.    // Copy this file to the destination path
    
14.    // Open this file in the AutoCAD editor
    
15.    if ( NULL == ( hAcad = ::GetModuleHandle (_T("acad.exe"))))
    
16.       acutPrintf( "\nCannot get handle to AutoCAD's executable!" );
    
17.    else if ( !::GetModuleFileName( hAcad, dwtPath, MAX_PATH ))
    
18.       acutPrintf( "\nCannot get AutoCAD's location!" );
    
19.    else if ( NULL == ( pLastSlash = strrchr( dwtPath, '\\' )))
    
20.       acutPrintf( "\nCannot extract AutoCAD's path!" );
    
21.    else if ( (pLastSlash - dwtPath) + strlen( dwtFile ) > MAX_PATH )
    
22.       acutPrintf( "\nPath too long to get template path!" );
    
23.    else {
    
24.       strcpy( pLastSlash + 1, dwtFile );
    
25.       // Do not overwrite file if it already exists (could do further checking here)
    
26.       if ( !::CopyFile( dwtPath, newFile, TRUE )){
    
27.          // Cannot copy file for one reason or another (if error 80 then file exists)
    
28.          DWORD dwErr = GetLastError();
    
29.          acutPrintf( "\nCannot copy template file, failed with error %d",dwErr );
    
30.          return;
    
31.       }
    
32.       // See solution 3615 if you need to clear the DBMOD system variable
    
33.       if ( /*Adesk::kFalse == */acedSyncFileOpen( newFile ))
    
34.          // Opening the newly copied file has failed/been cancelled
    
35.          ::DeleteFile( newFile );
    
36.    }
    
37. }
    

void mynewmynew()<br /> {<br />    // TODO: Implement the command<br />    const TCHAR newFile[] = "Drawing.dwg";<br />    const TCHAR dwtFile[] = "Template\\Acad.dwt";<br />    TCHAR dwtPath [ MAX_PATH ], *pLastSlash = NULL;<br />    HMODULE hAcad = NULL;<br />    // Get the Template file/pathname by:<br />    //     get the pathname of the AutoCAD executable<br />    //     find the final backslash<br />    //     copy the template directory name and the template filename (e.g."Template\\Acad.dwt")<br />    //       onto this path after the final backslash<br />    // Copy this file to the destination path<br />    // Open this file in the AutoCAD editor<br />    if ( NULL == ( hAcad = ::GetModuleHandle (_T("acad.exe"))))<br />       acutPrintf( "\nCannot get handle to AutoCAD's executable!" );<br />    else if ( !::GetModuleFileName( hAcad, dwtPath, MAX_PATH ))<br />       acutPrintf( "\nCannot get AutoCAD's location!" );<br />    else if ( NULL == ( pLastSlash = strrchr( dwtPath, '\\' )))<br />       acutPrintf( "\nCannot extract AutoCAD's path!" );<br />    else if ( (pLastSlash - dwtPath) + strlen( dwtFile ) > MAX_PATH )<br />       acutPrintf( "\nPath too long to get template path!" );<br />    else {<br />       strcpy( pLastSlash + 1, dwtFile );<br />       // Do not overwrite file if it already exists (could do further checking here)<br />       if ( !::CopyFile( dwtPath, newFile, TRUE )){<br />          // Cannot copy file for one reason or another (if error 80 then file exists)<br />          DWORD dwErr = GetLastError();<br />          acutPrintf( "\nCannot copy template file, failed with error %d",dwErr );<br />          return;<br />       }<br />       // See solution 3615 if you need to clear the DBMOD system variable<br />       if ( /*Adesk::kFalse == */acedSyncFileOpen( newFile ))<br />          // Opening the newly copied file has failed/been cancelled<br />          ::DeleteFile( newFile );<br />    }<br /> }<br />

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正好要找这个命令感谢楼主

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