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#Declare Serial Mfc windows
You may want to take a look at this link for Windows serial port communication. It appears that you are on Windows, Windows has API calls to open and control the serial port, and using the buffered input and output functions is usually not advised when dealing with the serial port. Relying on the system to configure your serial port can cause problems, you probably should use your operating system API calls to initialize the port. What don't you like about your program? You probably should provide a complete program if you want assistance optimizing your program. To keep your balance you must keep moving - Einstein. Otherwise why would i? Life is like riding a bicycle.
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I've read some articles, but didn't find something controversial in my code. Hi all! I send some data to serial port: Code. Lets discuss about CObject‘s another feature “object diagnostic support” in our next article “ MFC – CObject class – Enable Object Diagnostic support“.Remember Me? Thread: Reading and writing to serial port. Method 2 may not create an instance for Shape class by enable serialization support to Shape class to make it work.
#Declare Serial Mfc code
If ( pobj2->IsKindOf(RUNTIME_CLASS(Shape)) )įrom above code we have created Shape class object dynamically created using CRuntimeClass‘s CreateObject method(s). Method 2 - Object creation using static methodĬObject *pobj2 = CRuntimeClass::CreateObject("Shape") Printf("This is an instance of Shape class.") If ( pobj1->IsKindOf(RUNTIME_CLASS(Shape)) ) Putting together the dynamic object creation code looks like below: void main()ĬRuntimeClass *pRuntimeClass = RUNTIME_CLASS(Shape) Up on success both above methods will return an instance pointer to CObject class. Observe that here we are passing name of the class as a string. Call CRuntimeClass‘s static version of CreateObject method to create an instance of Shape class dynamically. Īfter adding this macro, Shape class implementation file looks like below: // Shape.cpp Our class name is “Shape”, so we need to pass Shape as and our “Shape” class’s base class is CObject hence we need to pass CObject as. Where is the name of the class and is its base class name. The syntax of IMPLEMENT_DYNCREATE macro is like below: IMPLEMENT_DYNCREATE(, )
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Now important thing is we need to add IMPLEMENT_DYNCREATE macro into “Shape” class’s implementation file. The syntax for this macro is: DECLARE_DYNCREATE()Īfter we added DECLARE_DYNCREATE macro to our class “Shape” the class code looks like below: // Shape.h Add DECLARE_DYNCREATE macro into “Shape” class header file. Lets put these macros into our class “Shape” and create an instance of this class dynamically. static CObject* PASCAL CreateObject(LPCSTR lpszClassName) īoth these methods return NULL value when failed to create an instance of a class. This is the static method of CRuntimeClass, so we can call this method directly without using CRuntimeClass instance. To create a class from the string, we can use the below method. This method should be called using instance(s) of CRuntimeClass. One is its class member and another one is a static function. The syntax of these are: CObject* CreateObject() CRuntimeClass provides multiple versions of CreateObject function. This is very helpful function MFC internally use this function to create class’ objects dynamically.
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After adding these macros MFC enables to use CRuntimeClass‘s CreateObject method.ĬreateObject method is useful to create dynamic objects for the given classes. To enable “dynamic object creation” feature for the class which is derived from CObject class we need to add DECLARE_DYNCREATE macro in the class’ header file and we must also need to add IMPLEMENT_DYNCREATE macro in class’ implementation file. In this article I am going to discuss about CObject‘s other feature “dynamic object creation”. As of now we have discussed about CObject class features “run-time class information” and “serialization support” in our previous articles MFC – CObject class – An Introduction – Enable Run-time class information and MFC – CObject class – Enable Object Serialization respectively.