تنظیم حاشیه ها در EDIT CONTROL

: wParam 

EC_LEFTMARGIN

EC_RIGHTMARGIN

 : lParam

The LOWORD specifies the new width of the left margin, in pixels. This value is ignored if wParam does not include EC_LEFTMARGIN

The HIWORD specifies the new width of the right margin, in pixels. This value is ignored if wParam does not include EC_RIGHTMARGIN.

EM_SETRECT

wParam

.parameter is not used and must be zero

lParam

A pointer to a RECT structure that specifies the new dimensions of the rectangle. If this parameter is NULL, 

.the formatting rectangle is set to its default values

RECT rc

'Get the current control rectangle

(SendMessage(hWndRichEdit,EM_GETRECT,0,ByVal rc

rc.left += 20 'increase the left margin

rc.top += 20 'increase the top margin

rc.right -= 20 'decrease the right margin

rc.bottom -= 20 'decrease the bottom margin (rectangle) ' Set the rectangle

(SendMessage(hWndRichEdit,EM_SETRECT,0,ByVal rc

EM-SETMARGINS