L_ILM_GETBACKCOLOR

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

Parameters

wParam

Ignored, use 0.

lParam

Pointer to a variable to be updated with the background color of the control.

Returns

Value	Meaning
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.

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; 
}