因为NotifyInvalidateRect只有窗口可见时再通知刷新，这里在窗口可见状态改变前后都执行一次通知。

zIn is either a pointer to a NULL-terminated string in memory obtained ** from malloc(), or a NULL pointer. The string pointed to by zAppend is ** add

* SRealWnd::GetData * @brief 获取附加数据 * @return 返回LPVOID * * Describe 获取附加数据 */

Returns true if this set is empty. */

* Returns the input filter at a given index, or NULL if no input is * connected. The indices used are filter-specific. */

Return the next pseudo random number expressed as a SkScalar in the range [0..SK_Scalar1). */

* Return the height of the tree. This can only be nonzero at an inner node. * * @return 0 if the implementation is a leaf node, *

GetBuf(minLen): provides the buffer that can store at least (minLen) characters and additional null terminator. 9.35: GetBuf doesn't preserv

Given an integer and a positive (max) integer, return the value * pinned against 0 and max, inclusive. * @param value The value we want returne

Return the length of a TiXmlString

When Android is compiled optimizing for size, SkAlphaMulQ doesn't get inlined; forcing inlining significantly improves performance.

expose this to allow for regression test on complex regions

Linearly interpolate between A and B, based on t. If t is 0, return A If t is 1, return B else interpolate. t must be [0..SK_Scalar1]

* Gets the capabilities of the draw target. */

* SComboBox::GetCount * @brief ��ȡ��������� * @return ����int * * Describe ��ȡ��������� */

* Retrieves the pixel config specified when the surface was created. * For render targets this can be kUnknown_GrPixelConfig * if client ask