ID2D1Transform::MapInvalidRect method (d2d1effectauthor.h)
Sets the input rectangles for this rendering pass into the transform.
Syntax
HRESULT MapInvalidRect(
UINT32 inputIndex,
D2D1_RECT_L invalidInputRect,
[out] D2D1_RECT_L *invalidOutputRect
);
Parameters
inputIndex
Type: UINT32
The index of the input rectangle.
invalidInputRect
Type: D2D1_RECT_L
The invalid input rectangle.
[out] invalidOutputRect
Type: D2D1_RECT_L*
The output rectangle to which the input rectangle must be mapped.
Return value
Type: HRESULT
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
Remarks
The transform implementation must regard MapInvalidRect as purely functional. The transform implementation can base the mapped input rectangle on the transform implementation's current state as specified by the encapsulating effect properties. But the transform implementation can't change its own state in response to a call to MapInvalidRect. Direct2D can call this method at any time and in any sequence following a call to the MapInputRectsToOutputRect method.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 and Platform Update for Windows 7 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2012 and Platform Update for Windows Server 2008 R2 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | d2d1effectauthor.h |
| Library | D2d1.lib |