The state a DrawWindow is in.

The identifer of a window of the underlying windowing system.

Gets the bitwise OR of the currently active drawWindow state flags, from the WindowState enumeration.

Scroll the contents of DrawWindow.

• Scroll both, pixels and children, by the given amount. DrawWindow itself does not move. Portions of the window that the scroll operation brings inm from offscreen areas are invalidated. The invalidated region may be bigger than what would strictly be necessary. (For X11, a minimum area will be invalidated if the window has no subwindows, or if the edges of the window's parent do not extend beyond the edges of the drawWindow. In other cases, a multi-step process is used to scroll the window which may produce temporary visual artifacts and unnecessary invalidations.)

Clears an entire DrawWindow to the background color or background pixmap.

Clears an area of DrawWindow to the background color or background pixmap.

Like drawWindowClearArea, but also generates an expose event for the cleared area.

Raises DrawWindow to the top of the Z-order (stacking order), so that other drawWindows with the same parent drawWindow appear below DrawWindow. This is true whether or not the drawWindows are visible.

If DrawWindow is a toplevel, the window manager may choose to deny the request to move the drawWindow in the Z-order, drawWindowRaise only requests the restack, does not guarantee it.

Lowers DrawWindow to the bottom of the Z-order (stacking order), so that other windows with the same parent window appear above DrawWindow. This is true whether or not the other windows are visible.

If DrawWindow is a toplevel, the window manager may choose to deny the request to move the drawWindow in the Z-order, drawWindowLower only requests the restack, does not guarantee it.

Note that a widget is raised automatically when it is mapped, thus you need to call drawWindowLower after Graphics.UI.Gtk.Abstract.Widget.widgetShow if the window should not appear above other windows.

A convenience wrapper around drawWindowBeginPaintRegion which creates a rectangular region for you.

• See drawWindowBeginPaintRegion for details.

Indicate that you are beginning the process of redrawing region.

• A backing store (offscreen buffer) large enough to contain region will be created. The backing store will be initialized with the background color or background pixmap for DrawWindow. Then, all drawing operations performed on DrawWindow will be diverted to the backing store. When you call drawWindowEndPaint, the backing store will be copied to DrawWindow, making it visible onscreen. Only the part of DrawWindow contained in region will be modified; that is, drawing operations are clipped to region.

The net result of all this is to remove flicker, because the user sees the finished product appear all at once when you call drawWindowEndPaint. If you draw to DrawWindow directly without calling drawWindowBeginPaintRegion, the user may see flicker as individual drawing operations are performed in sequence. The clipping and background-initializing features of drawWindowBeginPaintRegion are conveniences for the programmer, so you can avoid doing that work yourself.

When using GTK+, the widget system automatically places calls to drawWindowBeginPaintRegion and drawWindowEndPaint around emissions of the expose_event signal. That is, if you're writing an expose event handler, you can assume that the exposed area in eventRegion has already been cleared to the window background, is already set as the clip region, and already has a backing store. Therefore in most cases, application code need not call drawWindowBeginPaintRegion. (You can disable the automatic calls around expose events on a widget-by-widget basis by calling widgetSetDoubleBuffered.)

If you call this function multiple times before calling the matching drawWindowEndPaint, the backing stores are pushed onto a stack. drawWindowEndPaint copies the topmost backing store onscreen, subtracts the topmost region from all other regions in the stack, and pops the stack. All drawing operations affect only the topmost backing store in the stack. One matching call to drawWindowEndPaint is required for each call to drawWindowBeginPaintRegion.

Signal that drawing has finished.

• Indicates that the backing store created by the most recent call to drawWindowBeginPaintRegion should be copied onscreen and deleted, leaving the next-most-recent backing store or no backing store at all as the active paint region. See drawWindowBeginPaintRegion for full details. It is an error to call this function without a matching drawWindowBeginPaintRegion first.

A convenience wrapper around drawWindowInvalidateRegion which invalidates a rectangular region. See drawWindowInvalidateRegion for details.

Adds region to the update area for DrawWindow. The update area is the region that needs to be redrawn, or "dirty region.". During the next idle period of the main look, an expose even for this region will be created. An application would normally redraw the contents of DrawWindow in response to those expose events.

The invalidateChildren parameter controls whether the region of each child drawWindow that intersects region will also be invalidated. If False, then the update area for child drawWindows will remain unaffected.

Ask for the dirty region of this window.

• Transfers ownership of the update area from DrawWindow to the caller of the function. That is, after calling this function, DrawWindow will no longer have an invalid/dirty region; the update area is removed from DrawWindow and handed to you. If this window has no update area, drawWindowGetUpdateArea returns Nothing.

Temporarily freezes a drawWindow such that it won't receive expose events. * The drawWindow will begin receiving expose events again when drawWindowThawUpdates is called. If drawWindowFreezeUpdates has been called more than once, drawWindowThawUpdates must be called an equal number of times to begin processing exposes.

Thaws a drawWindow frozen with drawWindowFreezeUpdates.

Sends one or more expose events to DrawWindow.

• The areas in each expose event will cover the entire update area for the window (see drawWindowInvalidateRegion for details). Normally Gtk calls drawWindowProcessUpdates on your behalf, so there's no need to call this function unless you want to force expose events to be delivered immediately and synchronously (vs. the usual case, where Gtk delivers them in an idle handler). Occasionally this is useful to produce nicer scrolling behavior, for example.

Setting acceptFocus to False hints the desktop environment that the window doesn't want to receive input focus.

On X, it is the responsibility of the drawWindow manager to interpret this hint. ICCCM-compliant drawWindow manager usually respect it.

• Available since Gdk version 2.4

Applies a shape mask to window. Pixels in window corresponding to set bits in the mask will be visible; pixels in window corresponding to unset bits in the mask will be transparent. This gives a non-rectangular window.

• If mask is Nothing, the shape mask will be unset, and the x/y parameters are not used. The mask must be a bitmap, that is, a Pixmap of depth one.
• On the X11 platform, this uses an X server extension which is widely available on most common platforms, but not available on very old X servers, and occasionally the implementation will be buggy. On servers without the shape extension, this function will do nothing. On the Win32 platform the functionality is always present.
• This function works on both toplevel and child windows.

Makes pixels in DrawWindow outside shapeRegion transparent.

• Makes pixels in DrawWindow outside shapeRegion transparent, so that the window may be nonrectangular.

If shapeRegion is Nothing, the shape will be unset, so the whole DrawWindow will be opaque again. The parameters offsetX and offsetY are ignored if shapeRegion is Nothing.

On the X11 platform, this uses an X server extension which is widely available on most common platforms, but not available on very old X servers, and occasionally the implementation will be buggy. On servers without the shape extension, this function will do nothing.

This function works on both toplevel and child drawWindows.

Sets the shape mask of DrawWindow to the union of shape masks for all children of DrawWindow, ignoring the shape mask of DrawWindow itself. Contrast with drawWindowMergeChildShapes which includes the shape mask of DrawWindow in the masks to be merged.

Merges the shape masks for any child drawWindows into the shape mask for DrawWindow. i.e. the union of all masks for DrawWindow and its children will become the new mask for DrawWindow. See drawWindowShapeCombineMask.

This function is distinct from drawWindowSetChildShapes because it includes DrawWindow's shape mask in the set of shapes to be merged.

Obtains the current pointer position and modifier state.

• The position is given in coordinates relative to the given window.
• The return value is (Just win, x, y, mod) where win is the window over which the mouse currently resides and mod denotes the keyboard modifiers currently being depressed.
• The return value is Nothing for the window if the mouse cursor is not over a known window.

Obtains the position of a window in screen coordinates.

You can use this to help convert a position between screen coordinates and local DrawWindow relative coordinates.

Get the handle to an exising window of the windowing system. The passed-in handle is a reference to a native window, that is, an Xlib XID for X windows and a HWND for Win32.

Obtains the root window (parent all other windows are inside) for the default display and screen.