> For the complete documentation index, see [llms.txt](https://sandbox-docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sandbox-docs.verifone.com/adk-5.0-programmers-guide/keypad_8h_source.md).

# keypad.h

[Go to the documentation of this file.](/adk-5.0-programmers-guide/readme/files/dir_44d926a17fc606d3c25449ba60427c63/dir_048f823fee1bfb22502a8732b9a001aa/keypad_8h.md)

```cpp
 1 #ifndef KEYPAD_H
 2 #define KEYPAD_H
 3 
 4 #include <string>
 5 #include <vector>
 6 #include "csd.h"
 7 #include "ui.h"
 8 
 9 class KeyPad
 10 {
 11  public:
 12  typedef void (* callback_t)(unsigned char, csd::csd_string);
 13 
 17  static KeyPad &getInstance()
 18  {
 19  static KeyPad instance;
 20  return instance;
 21  }
 22 
 23  ~KeyPad();
 24 
 36  int enterData(csd::csd_string &data, enum DataEntryType entryType, callback_t cb, unsigned char minInputLength, unsigned char maxInputLength, unsigned short timeout = 0, unsigned char skipCb9FFE = 0);
 37 
 38  private:
 39  KeyPad();
 40  KeyPad(const KeyPad &other); // non construction-copyable
 41  KeyPad &operator=(const KeyPad &); // non copyable
 42 
 43 };
 44 
 45 #endif // KEYPAD_H
```


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