ObjectARX(CAD)_Step2_1
Adding Commands using the ObjectARX Wizardk
本章的目的是为了在我们通过 ObjectARX Wizard 构建的项目中,添加两个 CAD 命令
1. Object Wizard 生成的 acrxEntryPoint.cpp 文件分析
完整代码
//-----------------------------------------------------------------------------
//----- acrxEntryPoint.cpp
//-----------------------------------------------------------------------------
#include "StdAfx.h"
#include "resource.h"
//-----------------------------------------------------------------------------
#define szRDS _RXST("asdk")
//-----------------------------------------------------------------------------
//----- ObjectARX EntryPoint, AutoCAD 传递信息地主要入口
class CWizardInitionApp : public AcRxArxApp {
public:
CWizardInitionApp () : AcRxArxApp () {}
virtual AcRx::AppRetCode On_kInitAppMsg (void *pkt) {
// TODO: Load dependencies here
// You *must* call On_kInitAppMsg here
AcRx::AppRetCode retCode =AcRxArxApp::On_kInitAppMsg (pkt) ;
// TODO: Add your initialization code here
return (retCode) ;
}
virtual AcRx::AppRetCode On_kUnloadAppMsg (void *pkt) {
// TODO: Add your code here
// You *must* call On_kUnloadAppMsg here
AcRx::AppRetCode retCode =AcRxArxApp::On_kUnloadAppMsg (pkt) ;
// TODO: Unload dependencies here
return (retCode) ;
}
virtual void RegisterServerComponents () {
}
// The ACED_ARXCOMMAND_ENTRY_AUTO macro can be applied to any static member
// function of the CWizardInitionApp class.
// The function should take no arguments and return nothing.
//
// NOTE: ACED_ARXCOMMAND_ENTRY_AUTO has overloads where you can provide resourceid and
// have arguments to define context and command mechanism.
// ACED_ARXCOMMAND_ENTRY_AUTO(classname, group, globCmd, locCmd, cmdFlags, UIContext)
// ACED_ARXCOMMAND_ENTRYBYID_AUTO(classname, group, globCmd, locCmdId, cmdFlags, UIContext)
// only differs that it creates a localized name using a string in the resource file
// locCmdId - resource ID for localized command
// Modal Command with localized name
// ACED_ARXCOMMAND_ENTRY_AUTO(CWizardInitionApp, asdkMyGroup, MyCommand, MyCommandLocal, ACRX_CMD_MODAL)
static void asdkMyGroupMyCommand () {
// Put your command code here
}
// Modal Command with pickfirst selection
// ACED_ARXCOMMAND_ENTRY_AUTO(CWizardInitionApp, asdkMyGroup, MyPickFirst, MyPickFirstLocal, ACRX_CMD_MODAL | ACRX_CMD_USEPICKSET)
static void asdkMyGroupMyPickFirst () {
ads_name result ;
int iRet =acedSSGet (ACRX_T("_I"), NULL, NULL, NULL, result) ;
if ( iRet == RTNORM )
{
// There are selected entities
// Put your command using pickfirst set code here
}
else
{
// There are no selected entities
// Put your command code here
}
}
// Application Session Command with localized name
// ACED_ARXCOMMAND_ENTRY_AUTO(CWizardInitionApp, asdkMyGroup, MySessionCmd, MySessionCmdLocal, ACRX_CMD_MODAL | ACRX_CMD_SESSION)
static void asdkMyGroupMySessionCmd () {
// Put your command code here
}
// The ACED_ADSFUNCTION_ENTRY_AUTO / ACED_ADSCOMMAND_ENTRY_AUTO macros can be applied to any static member
// function of the CWizardInitionApp class.
// The function may or may not take arguments and have to return RTNORM, RTERROR, RTCAN, RTFAIL, RTREJ to AutoCAD, but use
// acedRetNil, acedRetT, acedRetVoid, acedRetInt, acedRetReal, acedRetStr, acedRetPoint, acedRetName, acedRetList, acedRetVal to return
// a value to the Lisp interpreter.
//
// NOTE: ACED_ADSFUNCTION_ENTRY_AUTO / ACED_ADSCOMMAND_ENTRY_AUTO has overloads where you can provide resourceid.
//- ACED_ADSFUNCTION_ENTRY_AUTO(classname, name, regFunc) - this example
//- ACED_ADSSYMBOL_ENTRYBYID_AUTO(classname, name, nameId, regFunc) - only differs that it creates a localized name using a string in the resource file
//- ACED_ADSCOMMAND_ENTRY_AUTO(classname, name, regFunc) - a Lisp command (prefix C:)
//- ACED_ADSCOMMAND_ENTRYBYID_AUTO(classname, name, nameId, regFunc) - only differs that it creates a localized name using a string in the resource file
// Lisp Function is similar to ARX Command but it creates a lisp
// callable function. Many return types are supported not just string
// or integer.
// ACED_ADSFUNCTION_ENTRY_AUTO(CWizardInitionApp, MyLispFunction, false)
static int ads_MyLispFunction () {
//struct resbuf *args =acedGetArgs () ;
// Put your command code here
//acutRelRb (args) ;
// Return a value to the AutoCAD Lisp Interpreter
// acedRetNil, acedRetT, acedRetVoid, acedRetInt, acedRetReal, acedRetStr, acedRetPoint, acedRetName, acedRetList, acedRetVal
return (RTNORM) ;
}
} ;
//-----------------------------------------------------------------------------
IMPLEMENT_ARX_ENTRYPOINT(CWizardInitionApp)
ACED_ARXCOMMAND_ENTRY_AUTO(CWizardInitionApp, asdkMyGroup, MyCommand, MyCommandLocal, ACRX_CMD_MODAL, NULL)
ACED_ARXCOMMAND_ENTRY_AUTO(CWizardInitionApp, asdkMyGroup, MyPickFirst, MyPickFirstLocal, ACRX_CMD_MODAL | ACRX_CMD_USEPICKSET, NULL)
ACED_ARXCOMMAND_ENTRY_AUTO(CWizardInitionApp, asdkMyGroup, MySessionCmd, MySessionCmdLocal, ACRX_CMD_MODAL | ACRX_CMD_SESSION, NULL)
ACED_ADSSYMBOL_ENTRY_AUTO(CWizardInitionApp, MyLispFunction, false)
2. 在 acrxEntryPoint.cpp 中实现两个方法 myInput & mySelect
原始生成地代码有些目前我们不需要的部分, 我们通过一些简单的删改, 在代码中添加两个函数 AsdkStep02_myInput & AsdkStep02_mySelect
- "MYINPUT" 命令用于演示 ObjectARX输入函数 的使用
a. 要求用户输入一个整数值，限制这个值必须大于零;
b. 要求用户输入一个真实值, 同时允许基于关键字的输入, 比如用户可以键入这三个值: (PI, A, B), 如果用户键入的是 <ENTER> 键, 则默认是输入 "C", "PI" 的值是一个双精度的 3.14, "A" 的值 是 10.0;
c. 额外考虑, 如果用户在命令执行过程中, 使用 <ESC> 按键时的处理方法;
d. 在 AutoCAD 命令提示符 处显示 整型变量 和 双精度变量 的值;
图示
- "MYSELECT" 命令用于演示 ObjectARX实体选择函数 的使用
a. 要求用户选择一个实体(entity)
b. 如果成功选择实体, 在命令提示行显示所选择实体的对象ID, 这是 ads_name 数据类型的第一个元素;
图示
完整代码
//-----------------------------------------------------------------------------
//----- ObjectARX EntryPoint
class CStep02App : public AcRxArxApp {
public:
CStep02App () : AcRxArxApp () {}
virtual AcRx::AppRetCode On_kInitAppMsg (void *pkt) {
AcRx::AppRetCode retCode =AcRxArxApp::On_kInitAppMsg (pkt) ;
// TODO: Add your initialization code here
return (retCode) ;
}
virtual AcRx::AppRetCode On_kUnloadAppMsg (void *pkt) {
AcRx::AppRetCode retCode =AcRxArxApp::On_kUnloadAppMsg (pkt) ;
// TODO: Add your code here
return (retCode) ;
}
virtual void RegisterServerComponents ()
{
}
// ----- AsdkStep02._myInput command (do not rename)
/*
* MYINPUT 命令, 主要用于演示 ObjectARX 输入函数的使用
*/
static void AsdkStep02_myInput(void)
{
// Add your code for command AsdkStep02._myInput here
int stat, iValue ;
double rValue ;
TCHAR kWord [133] ;
acedInitGet (RSG_NONEG | RSG_NOZERO, _T("")) ;
if ( acedGetInt (_T("\nEnter an integer value: "), &iValue) != RTNORM )
return ;
rValue =12.0 ;
acedInitGet (RSG_NOZERO, _T("PI A B C")) ;
stat =acedGetReal (_T("\nEnter a real value [PI/A/B/C] <C>: "), &rValue) ;
switch (stat) {
case RTCAN: // User termination
return ;
case RTKWORD: // Got a keyword
if ( acedGetInput (kWord) != RTNORM )
return ;
if ( !_tcscmp (_T("PI"), kWord) )
rValue =3.14 ;
else if ( !_tcscmp (_T("A"), kWord) )
rValue =10 ;
else if ( !_tcscmp (_T("B"), kWord) )
rValue =11 ;
else if ( !_tcscmp (_T("C"), kWord) )
rValue =12 ;
break ;
case RTNONE:
acutPrintf (_T("\nTake default rValue %lf"), rValue) ;
break ;
case RTNORM:
break ;
default:
return ;
}
acutPrintf (_T("\nInteger : %d"), iValue) ;
acutPrintf (_T("\nReal : %lf"), rValue) ;
}
// ----- AsdkStep02._mySelect command (do not rename)
static void AsdkStep02_mySelect(void)
{
// Add your code for command AsdkStep02._mySelect here
ads_name en ;
ads_point pt ;
if ( acedEntSel (NULL, en, pt) != RTNORM )
return ;
acutPrintf (_T("\nYou selected entity ID: %ld"), en [0]) ;
}
} ;
//-----------------------------------------------------------------------------
IMPLEMENT_ARX_ENTRYPOINT(CStep02App)
ACED_ARXCOMMAND_ENTRY_AUTO(CStep02App, AsdkStep02, _mySelect, mySelect, ACRX_CMD_TRANSPARENT, NULL)
ACED_ARXCOMMAND_ENTRY_AUTO(CStep02App, AsdkStep02, _myInput, myInput, ACRX_CMD_TRANSPARENT, NULL)
