Creates a new shape for the system caret and gets ownership of the caret.
为系统插字符创建一个新的形状并获得它的所有权。
Creates a gray rectangle for the system caret and claims ownership of the caret. The caret shape can be a line or a block.
这个函数为系统插字符创建一个灰色的矩形,并声明对插字符的所有权。插字符的形状可以是线条,也可以是方块。
Specifies the width of the caret (in logical units). If this parameter is 0, the width is set to the system-defined window-border width.
指定了插字符的宽度(逻辑单位)。如果这个参数为0,则宽度被设为系统定义的窗口边框宽度。
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