group__region__fns.htm

MINIGUI1.6开发API

<p>
This function copies the region pointed to by <em>pSrcRgn</em> to the region pointed to by <em>pDstRgn</em>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>pDstRgn</em>&nbsp;</td><td>The destination region. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pSrcRgn</em>&nbsp;</td><td>The source region.</td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>TRUE on success, otherwise FALSE.</dd></dl>
<dl compact><dt><b>Note:</b></dt><dd>This function will empty the region <em>pDstRgn</em> first.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__region__fns.htm#ga5">EmptyClipRgn</a>, <a class="el" href="group__region__fns.htm#ga9">ClipRgnIntersect</a>, <a class="el" href="group__region__fns.htm#ga20">UnionRegion</a>, <a class="el" href="group__region__fns.htm#ga21">SubtractRegion</a>, <a class="el" href="group__region__fns.htm#ga22">XorRegion</a> </dd></dl>
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<a class="anchor" name="ga9" doxytag="gdi.h::ClipRgnIntersect"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="group__simple__types.htm#ga0">BOOL</a> GUIAPI ClipRgnIntersect           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="struct__CLIPRGN.htm">PCLIPRGN</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>pRstRgn</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>const <a class="el" href="struct__CLIPRGN.htm">CLIPRGN</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>pRgn1</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>const <a class="el" href="struct__CLIPRGN.htm">CLIPRGN</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>pRgn2</em></td>
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          <td class="md">)&nbsp;</td>
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<p>
Intersects two region. 
<p>
This function gets the intersection of two regions pointed to by <em>pRgn1</em> and <em>pRgn2</em> respectively and puts the result to the region pointed to by <em>pRstRgn</em>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>pRstRgn</em>&nbsp;</td><td>The intersected result region. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pRgn1</em>&nbsp;</td><td>The first region. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pRgn2</em>&nbsp;</td><td>The second region.</td></tr>
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</dl>
<dl compact><dt><b>Returns:</b></dt><dd>TRUE on success, otherwise FALSE.</dd></dl>
<dl compact><dt><b>Note:</b></dt><dd>If <em>pRgn1</em> does not intersected with <em>pRgn2</em>, the result region will be a emgty region.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__region__fns.htm#ga5">EmptyClipRgn</a>, <a class="el" href="group__region__fns.htm#ga8">ClipRgnCopy</a>, <a class="el" href="group__region__fns.htm#ga20">UnionRegion</a>, <a class="el" href="group__region__fns.htm#ga21">SubtractRegion</a>, <a class="el" href="group__region__fns.htm#ga22">XorRegion</a> </dd></dl>
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<a class="anchor" name="ga6" doxytag="gdi.h::CreateClipRgn"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="struct__CLIPRGN.htm">PCLIPRGN</a> GUIAPI CreateClipRgn           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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<p>
Creates a clipping region. 
<p>
<dl compact><dt><b>Returns:</b></dt><dd>The pointer to the clip region.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__region__fns.htm#ga4">InitClipRgn</a>, <a class="el" href="group__region__fns.htm#ga5">EmptyClipRgn</a>, <a class="el" href="group__region__fns.htm#ga7">DestroyClipRgn</a>. </dd></dl>
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<a class="anchor" name="ga7" doxytag="gdi.h::DestroyClipRgn"></a><p>
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          <td class="md" nowrap valign="top">void GUIAPI DestroyClipRgn           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="struct__CLIPRGN.htm">PCLIPRGN</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>pRgn</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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<p>
Empties and destroys a clipping region. 
<p>
This function empties and destroys a clipping region pointed to by <em>pRgn</em>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>pRgn</em>&nbsp;</td><td>The pointer to the region.</td></tr>
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</dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__region__fns.htm#ga4">InitClipRgn</a>, <a class="el" href="group__region__fns.htm#ga6">CreateClipRgn</a> </dd></dl>
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<a class="anchor" name="ga5" doxytag="gdi.h::EmptyClipRgn"></a><p>
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          <td class="md" nowrap valign="top">void GUIAPI EmptyClipRgn           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="struct__CLIPRGN.htm">PCLIPRGN</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>pRgn</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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<p>
Empties a clipping region. 
<p>
This function empties a clipping region pointed to by <em>pRgn</em>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>pRgn</em>&nbsp;</td><td>The pointer to the region.</td></tr>
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</dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__region__fns.htm#ga4">InitClipRgn</a> </dd></dl>
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<a class="anchor" name="ga10" doxytag="gdi.h::GetClipRgnBoundRect"></a><p>
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          <td class="md" nowrap valign="top">void GUIAPI GetClipRgnBoundRect           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="struct__CLIPRGN.htm">PCLIPRGN</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>pRgn</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="struct__RECT.htm">PRECT</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>pRect</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
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<p>
Gets the bounding rectangle of a region. 
<p>
This function gets the bounding rect of the region pointed to by <em>pRgn</em>, and returns the rect in the rect pointed to by <em>pRect</em>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>pRgn</em>&nbsp;</td><td>The pointer to the region. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pRect</em>&nbsp;</td><td>The pointer to the result rect.</td></tr>
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</dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__region__fns.htm#ga12">IsEmptyClipRgn</a> </dd></dl>
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<a class="anchor" name="ga23" doxytag="gdi.h::InitCircleRegion"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="group__simple__types.htm#ga0">BOOL</a> GUIAPI InitCircleRegion           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="struct__CLIPRGN.htm">PCLIPRGN</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>dst</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>x</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>y</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>r</em></td>
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          <td class="md"></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
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<p>
Initializes a region to be an enclosed circle. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>