Power Color Picker

Features :

This new control derived from CWnd provides an interface for users to select
colors for an object. It is more intuitive than CColorDialog in windows API.

Interface description :

• right rectangle : luminance.
• left rectangle : saturation on x axis, hue on y axis.
• bottom rectangle : currently selected color.

This control is fully resizable on the fly. You could specify a size for
each rectangle.
When you move the cursor with shift or ctrl, the color change only on one
axis (hue or saturation)

 

How to use it in a dialog :

• a member variable must be added to the dialog :

  ...protected:	PowerColorPicker picker;
  ...

• create the picker in the method OnInitDialog() of your dialog :

…

//specify the control size
RECT rect={10,10,390,300}; 

//create control in OnInitDialog()
 picker.Create(NULL,”Haha”,WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS ,rect,this, NULL, NULL);
…

• define a callback when the user click/move on picker :

  //define a callback
  void testfunc(COLORREF ref,void *ClientData)
  {
  	CColorPickerDlg * local= (CColorPickerDlg*)ClientData;
  
  	char str[256];
  	sprintf(str,"RED: %ld\nGREEN: %ld\nBLUE: %ld",GetRValue(ref),GetGValue(ref),GetBValue(ref));
  
  	OutputDebugString(str);
  
  }
  
  
  ...
  
  //register callbacks in OnInitDialog()
   
  picker.RegisterCallbackOnMove(testfunc,this); picker.RegisterCallbackOnLButtonDown(testfunc,this);
  
  ...

• you could define the width of the luminance bar anywhere in your source
  :

  ...
  
  
  picker.SetLuminanceBarWidth(20);
  
  ...

Downloads

Download Source Code – 31 Kb
Download Demo Application – 9 Kb