📄 sdlmousemotionevent.html

📁 VC5.6.7的一个扩展库。跟DirectX的功能差不多。
💻 HTML
字号:
<HTML><HEAD><TITLE>SDL_MouseMotionEvent</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="SDL Library Documentation"HREF="index.html"><LINKREL="UP"TITLE="SDL Event Structures."HREF="eventstructures.html"><LINKREL="PREVIOUS"TITLE="SDL_KeyboardEvent"HREF="sdlkeyboardevent.html"><LINKREL="NEXT"TITLE="SDL_MouseButtonEvent"HREF="sdlmousebuttonevent.html"></HEAD><BODYCLASS="REFENTRY"BGCOLOR="#FFF8DC"TEXT="#000000"LINK="#0000ee"VLINK="#551a8b"ALINK="#ff0000"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">SDL Library Documentation</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="sdlkeyboardevent.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="sdlmousebuttonevent.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="SDLMOUSEMOTIONEVENT"></A>SDL_MouseMotionEvent</H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN4079"></A><H2>Name</H2>SDL_MouseMotionEvent&nbsp;--&nbsp;Mouse motion event structure</DIV><DIVCLASS="REFSECT1"><ANAME="AEN4082"></A><H2>Structure Definition</H2><PRECLASS="PROGRAMLISTING">typedef struct{  Uint8 type;  Uint8 state;  Uint16 x, y;  Sint16 xrel, yrel;} SDL_MouseMotionEvent;</PRE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN4085"></A><H2>Structure Data</H2><DIVCLASS="INFORMALTABLE"><ANAME="AEN4087"></A><P></P><TABLEBORDER="0"CLASS="CALSTABLE"><TBODY><TR><TDALIGN="LEFT"VALIGN="TOP"><TTCLASS="STRUCTFIELD"><I>type</I></TT></TD><TDALIGN="LEFT"VALIGN="TOP"><TTCLASS="LITERAL">SDL_MOUSEMOTION</TT></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"><TTCLASS="STRUCTFIELD"><I>state</I></TT></TD><TDALIGN="LEFT"VALIGN="TOP">The current button state</TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"><TTCLASS="STRUCTFIELD"><I>x</I></TT>, <TTCLASS="STRUCTFIELD"><I>y</I></TT></TD><TDALIGN="LEFT"VALIGN="TOP">The X/Y coordinates of the mouse</TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"><TTCLASS="STRUCTFIELD"><I>xrel</I></TT>, <TTCLASS="STRUCTFIELD"><I>yrel</I></TT></TD><TDALIGN="LEFT"VALIGN="TOP">Relative motion in the X/Y direction</TD></TR></TBODY></TABLE><P></P></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN4109"></A><H2>Description</H2><P><SPANCLASS="STRUCTNAME">SDL_MouseMotionEvent</SPAN> is a member of the <AHREF="sdlevent.html"><SPANCLASS="STRUCTNAME">SDL_Event</SPAN></A> union and is used when an event of type <TTCLASS="LITERAL">SDL_MOUSEMOTION</TT> is reported.</P><P>Simply put, a <TTCLASS="LITERAL">SDL_MOUSEMOTION</TT> type event occurs when a user moves the mouse within the application window or when <AHREF="sdlwarpmouse.html"><TTCLASS="FUNCTION">SDL_WarpMouse</TT></A> is called. Both the absolute (<TTCLASS="STRUCTFIELD"><I>x</I></TT> and <TTCLASS="STRUCTFIELD"><I>y</I></TT>) and relative (<TTCLASS="STRUCTFIELD"><I>xrel</I></TT> and <TTCLASS="STRUCTFIELD"><I>yrel</I></TT>) coordinates are reported along with the current button states (<TTCLASS="STRUCTFIELD"><I>state</I></TT>). The button state can be interpreted using the <TTCLASS="LITERAL">SDL_BUTTON</TT> macro (see <AHREF="sdlgetmousestate.html"><TTCLASS="FUNCTION">SDL_GetMouseState</TT></A>).</P><P>If the cursor is hidden (<AHREF="sdlshowcursor.html"><TTCLASS="FUNCTION">SDL_ShowCursor</TT>(0)</A>) and the input is grabbed (<AHREF="sdlwmgrabinput.html"><TTCLASS="FUNCTION">SDL_WM_GrabInput</TT>(SDL_GRAB_ON)</A>), then the mouse will give relative motion events even when the cursor reaches the edge fo the screen. This is currently only implemented on Windows and Linux/Unix-a-likes.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN4133"></A><H2>See Also</H2><P><AHREF="sdlevent.html"><SPANCLASS="STRUCTNAME">SDL_Event</SPAN></A>,<AHREF="sdlmousebuttonevent.html"><SPANCLASS="STRUCTNAME">SDL_MouseButtonEvent</SPAN></A></P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="sdlkeyboardevent.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="index.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="sdlmousebuttonevent.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">SDL_KeyboardEvent</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="eventstructures.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">SDL_MouseButtonEvent</TD></TR></TABLE></DIV></BODY></HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -