+++ /dev/null
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+++ /dev/null
-#include <stddef.h>\r
-#include <stdio.h>\r
-#include "FastDelegate.h"\r
-// Demonstrate the syntax for FastDelegates.\r
-// -Don Clugston, May 2004.\r
-// It's a really boring example, but it shows the most important cases.\r
-\r
-// Declare some functions of varying complexity...\r
-void SimpleStaticFunction(int num, char *str) {\r
- printf("In SimpleStaticFunction. Num=%d, str = %s\n", num, str);\r
-}\r
-\r
-void SimpleVoidFunction() {\r
- printf("In SimpleVoidFunction with no parameters.\n");\r
-}\r
-\r
-class CBaseClass {\r
-protected:\r
- char *m_name;\r
-public:\r
- CBaseClass(char *name) : m_name(name) {};\r
- void SimpleMemberFunction(int num, char *str) {\r
- printf("In SimpleMemberFunction in %s. Num=%d, str = %s\n", m_name, num, str); }\r
- int SimpleMemberFunctionReturnsInt(int num, char *str) {\r
- printf("In SimpleMemberFunction in %s. Num=%d, str = %s\n", m_name, num, str); return -1; }\r
- void ConstMemberFunction(int num, char *str) const {\r
- printf("In ConstMemberFunction in %s. Num=%d, str = %s\n", m_name, num, str); }\r
- virtual void SimpleVirtualFunction(int num, char *str) {\r
- printf("In SimpleVirtualFunction in %s. Num=%d, str = %s\n", m_name, num, str); }\r
- static void StaticMemberFunction(int num, char *str) {\r
- printf("In StaticMemberFunction. Num=%d, str =%s\n", num, str); }\r
-};\r
-\r
-class COtherClass {\r
- double rubbish; // to ensure this class has non-zero size.\r
-public:\r
- virtual void UnusedVirtualFunction(void) { }\r
- virtual void TrickyVirtualFunction(int num, char *str)=0;\r
-};\r
-\r
-class VeryBigClass {\r
- int letsMakeThingsComplicated[400];\r
-};\r
-\r
-// This declaration ensures that we get a convoluted class heirarchy.\r
-class CDerivedClass : public VeryBigClass, virtual public COtherClass, virtual public CBaseClass\r
-{\r
- double m_somemember[8];\r
-public:\r
- CDerivedClass() : CBaseClass("Base of Derived") { m_somemember[0]=1.2345; }\r
- void SimpleDerivedFunction(int num, char *str) { printf("In SimpleDerived. num=%d\n", num); }\r
- virtual void AnotherUnusedVirtualFunction(int num, char *str) {}\r
- virtual void TrickyVirtualFunction(int num, char *str) {\r
- printf("In Derived TrickyMemberFunction. Num=%d, str = %s\n", num, str);\r
- }\r
-};\r
-\r
-using namespace fastdelegate;\r
-\r
-int main(void)\r
-{\r
- // Delegates with up to 8 parameters are supported.\r
- // Here's the case for a void function.\r
- // We declare a delegate and attach it to SimpleVoidFunction()\r
- printf("-- FastDelegate demo --\nA no-parameter delegate is declared using FastDelegate0\n\n");\r
-\r
- FastDelegate0<> noparameterdelegate(&SimpleVoidFunction);\r
-\r
- noparameterdelegate(); // invoke the delegate - this calls SimpleVoidFunction()\r
-\r
- printf("\n-- Examples using two-parameter delegates (int, char *) --\n\n");\r
-\r
- // By default, the return value is void.\r
- typedef FastDelegate2<int, char *> MyDelegate;\r
-\r
- // If you want to have a non-void return value, put it at the end.\r
- typedef FastDelegate2<int, char *, int> IntMyDelegate;\r
-\r
-\r
- MyDelegate funclist[12]; // delegates are initialized to empty\r
- CBaseClass a("Base A");\r
- CBaseClass b("Base B");\r
- CDerivedClass d;\r
- CDerivedClass c;\r
-\r
- IntMyDelegate newdeleg;\r
- newdeleg = MakeDelegate(&a, &CBaseClass::SimpleMemberFunctionReturnsInt);\r
- \r
- // Binding a simple member function\r
- funclist[0].bind(&a, &CBaseClass::SimpleMemberFunction);\r
- \r
- // You can also bind static (free) functions\r
- funclist[1].bind(&SimpleStaticFunction);\r
- // and static member functions\r
- funclist[2].bind(&CBaseClass::StaticMemberFunction);\r
- // and const member functions (these only need a const class pointer). \r
- funclist[11].bind( (const CBaseClass *)&a, &CBaseClass::ConstMemberFunction);\r
- funclist[3].bind( &a, &CBaseClass::ConstMemberFunction);\r
- // and virtual member functions\r
- funclist[4].bind(&b, &CBaseClass::SimpleVirtualFunction);\r
-\r
- // You can also use the = operator. For static functions, a fastdelegate\r
- // looks identical to a simple function pointer.\r
- funclist[5] = &CBaseClass::StaticMemberFunction;\r
-\r
- // The weird rule about the class of derived member function pointers is avoided.\r
- // For MSVC, you can use &CDerivedClass::SimpleVirtualFunction here, but DMC will complain.\r
- // Note that as well as .bind(), you can also use the MakeDelegate()\r
- // global function.\r
- funclist[6] = MakeDelegate(&d, &CBaseClass::SimpleVirtualFunction);\r
-\r
- // The worst case is an abstract virtual function of a virtually-derived class\r
- // with at least one non-virtual base class. This is a VERY obscure situation,\r
- // which you're unlikely to encounter in the real world.\r
- // FastDelegate versions prior to 1.3 had problems with this case on VC6.\r
- // Now, it works without problems on all compilers.\r
- funclist[7].bind(&c, &CDerivedClass::TrickyVirtualFunction);\r
- // BUT... in such cases you should be using the base class as an \r
- // interface, anyway.\r
- funclist[8].bind(&c, &COtherClass::TrickyVirtualFunction);\r
- // Calling a function that was first declared in the derived class is straightforward\r
- funclist[9] = MakeDelegate(&c, &CDerivedClass::SimpleDerivedFunction);\r
-\r
- // You can also bind directly using the constructor\r
- MyDelegate dg(&b, &CBaseClass::SimpleVirtualFunction);\r
-\r
- char *msg = "Looking for equal delegate";\r
- for (int i=0; i<12; i++) {\r
- printf("%d :", i);\r
- // The == and != operators are provided\r
- // Note that they work even for inline functions.\r
- if (funclist[i]==dg) { msg = "Found equal delegate"; };\r
- // operator ! can be used to test for an empty delegate\r
- // You can also use the .empty() member function.\r
- if (!funclist[i]) {\r
- printf("Delegate is empty\n");\r
- } else {\r
- // Invocation generates optimal assembly code.\r
- funclist[i](i, msg);\r
- };\r
- }\r
- return 0;\r
-}\r
-\r
projects / framework / web / wrt-commons.git / commitdiff