L_ILM_GETBACKCOLOR

Send this message to get the background color of the ImageList Control.

Parameter	Description
wParam	Ignored, use 0.
lParam	Pointer to a variable to be updated with the background color of the control.

Returns

SUCCESS	Function was successful
< 0	An error occurred. Refer to Return Codes.

Comments

Before using this message, you must allocate a variable of type COLORREF and pass the address of this variable in lParam.

The variable pointed to by lParam will be updated with the ImageList Control's current background color.

The associated macro is:

L_ImgListGetBackColor(hWnd, pcrBack)

For a complete list of available macros, refer to the Ltlst.h file.

See Also

Elements:	L_ILM_SETBACKCOLOR, L_ILM_GETBORDERCOLOR, L_ILM_SETBORDERCOLOR, L_ILM_GETSELOPTIONS, L_ILM_GETITEMOPTIONS
Topics:	Using the ImageList Control
	Image List Control Messages
	Using Color Values in LEADTOOLS

Example

 L_INT ILM_GETBACKCOLORExample(HWND hCtrl)
{
   if(IsWindow(hCtrl))
   {
      L_INT nRet;
      COLORREF crBack;

      /* get current color */
      nRet = (L_INT)SendMessage(hCtrl, L_ILM_GETBACKCOLOR, 0, (LPARAM)&crBack);
      /* change it and reset */
      if(crBack != RGB(190,190,190))
         crBack = RGB(190,190,190);
      nRet = (L_INT)SendMessage(hCtrl, L_ILM_SETBACKCOLOR, 0, (LPARAM)&crBack);
      RedrawWindow(hCtrl, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ERASE);

      return nRet;
   }
   else
      return ERROR_INVALID_PARAMETER;
}