User32InvalidateRect(SafeHandle, IntPtr, Boolean) Method

[DllImportAttribute("User32.dll", SetLastError = true)]
public static bool InvalidateRect(
	SafeHandle hWnd,
	ref IntPtr refRect,
	bool erase
)

<DllImportAttribute("User32.dll", SetLastError := true>]
Public Shared Function InvalidateRect ( 
	hWnd As SafeHandle,
	ByRef refRect As IntPtr,
	erase As Boolean
) As Boolean

Dim hWnd As SafeHandle
Dim refRect As IntPtr
Dim erase As Boolean

Dim returnValue As Boolean

returnValue = User32.InvalidateRect(hWnd, 
	refRect, erase)

public:
[DllImportAttribute(L"User32.dll", SetLastError = true)]
static bool InvalidateRect(
	SafeHandle^ hWnd, 
	IntPtr% refRect, 
	bool erase
)

[<DllImportAttribute("User32.dll", SetLastError = true)>]
static member InvalidateRect : 
        hWnd : SafeHandle * 
        refRect : IntPtr byref * 
        erase : bool -> bool 

No code example is currently available or this language may not be supported.

Parameters

hWnd  SafeHandle

A handle to the window whose update region has changed.

If this parameter is Zero, the system invalidates and redraws all windows, not just the windows for this application, and sends the WM_EraseBkgnd and WM_NcPaint messages before the function returns.

Setting this parameter to Zero is not recommended.

refRect  IntPtr

A NativeRectangle structure that contains the client coordinates of the rectangle to be added to the update region.

If this parameter is , the entire client area is added to the update region.

erase  Boolean

[Missing <param name="erase"/> documentation for "M:DevCase.Win32.NativeMethods.User32.InvalidateRect(System.Runtime.InteropServices.SafeHandle,System.IntPtr@,System.Boolean)"]

Return Value

To get extended error information, call GetLastWin32Error.

Reference