The WM_NCHITTEST message is sent to a window when the cursor moves, or when a
mouse button is pressed or released. If the mouse is not captured, the message
is sent to the window beneath the cursor. Otherwise, the message is posted to
the window that has captured the mouse.
Value
| Location of hot spot
|
HTBORDER
| In the border of a window that does not have a sizing border
|
HTBOTTOM
| In the lower horizontal border of a window
|
HTBOTTOMLEFT
| In the lower-left corner of a window border
|
HTBOTTOMRIGHT
| In the lower-right corner of a window border
|
HTCAPTION
| In a title bar
|
HTCLIENT
| In a client area
|
HTERROR
| On the screen background or on a dividing line between windows (same as
HTNOWHERE, except that the DefWindowProc function produces a system beep to indicate an error)
|
HTGROWBOX
| In a size box (same as HTSIZE)
|
HTHSCROLL
| In a horizontal scroll bar
|
HTLEFT
| In the left border of a window
|
HTMENU
| In a menu
|
HTNOWHERE
| On the screen background or on a dividing line between windows
|
HTREDUCE
| In a Minimize button
|
HTRIGHT
| In the right border of a window
|
HTSIZE
| In a size box (same as HTGROWBOX)
|
HTSYSMENU
| In a System menu or in a Close button in a child window
|
HTTOP
| In the upper horizontal border of a window
|
HTTOPLEFT
| In the upper-left corner of a window border
|
HTTOPRIGHT
| In the upper right corner of a window border
|
HTTRANSPARENT
| In a window currently covered by another window
|
HTVSCROLL
| In the vertical scroll bar
|
HTZOOM
| In a Maximize button
|
