Recently wrote a program using a timer to create another thread every two seconds to perform some things, within the callback function is how to share data in a class? Some statements I want it only in the callback function can perform it again, please do?

CodePudding user response:

Implement several interface function in the class,

CodePudding user response:

Passing the class pointer as a function parameters, such as in the past

CodePudding user response:

The function is called different threads, they belong to different threads, as long as it is, you must ensure that synchronization, using the simplest critical region synchronization

CodePudding user response:

To the relevant parameters as the callback function, or do you define a global or static members, the callback function can access to the can,

CodePudding user response:

Shared data as long as the data set to global variables, parameters can also be
Only once can set a global variable
Such as

 
Int tis=0;//define a global variable 
If (tis==0) 
{
//do you want to execute statements 
Tis++; 
}//in the callback function 

CodePudding user response:

The incoming class pointer, the static or global object

CodePudding user response:

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Void CCashUnitAgeTestDlg: : OnOK ()
{
AfxBeginThread (ProcRunThread, (LPVOID) this);//the incoming object pointer
}

Void CCashUnitAgeTestDlg: : vShowResult (LPCTSTR p_pcTestInfo)
{
.
}

UINT ProcRunThread (LPVOID pParam)
{
//conversion
PParam CCashUnitAgeTestDlg * pDlg=(CCashUnitAgeTestDlg *);
PDlg - & gt; VShowResult ()
}