Adding digital counters

Description

• Easy to use!
• Create a new digital style just drawing a bitmap
• Automatic resize feature
• Written in Visual C++ v5.0
• Full source code included!
• It's free!

How to integrate CDigitST in your application

   DigitST.h
   DigitST.cpp
   

• Each digit must have the same width and height
• In the bitmap must be present 12 digits: 0..9 [blank] and [-]
  [blank] will be used for zeroes to the left
  [-] will be used as minus sign

With dialog editor create a static control called, for example, IDC_COUNTER and create a member variable for it:

   CDigitST m_dgtCounter;
   

Now attach the static control to CDigitST. In your OnInitDialog procedure:

   // Call the base method
   CDialog::OnInitDialog();

   // Create the IDC_COUNTER digital counter
   m_dgtCounter.SubclassDlgItem(IDC_COUNTER, this);
   

The control can display any number of digits you want (maximum is 10). Don't worry about the control dimensions since it will be resized at runtime depending on the precision (number of digits) you want. The control can be expanded/shrinked from left-to-right (or viceversa) and from top-to-bottom (or viceversa). See "CDigitST members" section for a detailed explanation of all possible resize values.

Set resize direction to left-to-right and top-to-bottom:

   // Set resize direction
   m_dgtCounter.SetResize(CDigitST::ST_RIGHT | CDigitST::ST_BOTTOM);
   

   // Assign bitmap and precision
   m_dgtCounter.SetStyle(IDB_SMALL1, 5);    // The control will be automatically resized
   

CDigitST has a default starting value of 0 (zero) but any value (in the range of signed integers) can be assigned to it:

   // Assign a starting value
   m_dgtCounter.SetValue(1000);
   

   // Enable zero padding
   m_dgtCounter.SetZeroPadding(TRUE);
   

Look inside the demo program to learn more about CDigitST. This is the best way! Also give a look to the included bitmaps to learn how to implement your own digital styles!

CDigitST members

• nBitmapId
  The resource bitmap to use as digits
• nPrecision
  Number of digits to display

• Nonzero if successful; otherwise 0.

void SetValue(int nValue, BOOL bRepaint = TRUE);
Set current digital counter value.
Input values:

• nValue
  The new value
• bRepaint
  If TRUE the control is immediately redrawn

int GetValue();
Get current digital counter value.
Example:
int nCurrent = m_dgtCounter.GetValue();

void SetPrecision(int nPrecision, BOOL bResize = TRUE);
Set number of displayed digits (called precision).
Input values:

• nPrecision
  Number of digits to display
  If precision is too low the counter will be truncated at the left
  Precision is limited between 1 and 10 (this limit can be easly modified)
• bRepaint
  If TRUE the control is immediately redrawn

int GetPrecision();
Get number of displayed digits.
Example:
int nPrecision = m_dgtCounter.GetPrecision();

void SetResize(DWORD dwResize, BOOL bResize = TRUE);
Set control resize direction.
Input values:

• dwResize
  Resize direction. This value can be a bitwise-OR operation of the following values:
  • ST_LEFT
    Resize to left
  • ST_RIGHT
    Resize to right
  • ST_TOP
    Resize to top
  • ST_BOTTOM
    Resize to bottom
• bResize
  If TRUE the control is immediately resized

DWORD GetResize();
Get control resize direction.
Example:
DWORD dwDirection = m_dgtCounter.GetResize();

void SetZeroPadding(BOOL bPad = FALSE, BOOL bRepaint = TRUE);
Enable/Disable showing zeroes at the left of the counter (called ZeroPadding).
Input values:

• bPad
  If TRUE the zeroes at the left are displayed
• bRepaint
  If TRUE the control is immediately redrawn

BOOL GetZeroPadding();
Get ZeroPadding state.
Example:
BOOL bPadding = m_dgtCounter.GetZeroPadding();

void Inc(BOOL bRepaint = TRUE);
Increment current digital counter value.
Input values:

• bRepaint
  If TRUE the control is immediately redrawn

void Dec(BOOL bRepaint = TRUE);
Decrement current digital counter value.
Input values:

• bRepaint
  If TRUE the control is immediately redrawn

static const short GetVersionI()
static const char* GetVersionC()
Return CDigitST version.
Example:
int nVer = CDigitST::GetVersionI(); // Divide by 10 to get actual version
char szVer[20];
strcpy(szVer, CDigitST::GetVersionC());

Download the demo project (103Kb).

History

• CDigitST v1.0
  First release

Things to do

• Any suggestion?

Contact addresses