group__nanox__region.html

Nano-x的设计架及相关文档----这是网上下载的中文翻译版本, E文的可以在其网站上下载.

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<p>
Tests whether the specified rectangle is contained within the specified region.
<p>
Returns GR_RECT_OUT if it is not inside it at all, GR_RECT_ALLIN if it is completely contained within the region, or GR_RECT_PARTIN if it is partially contained within the region.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign=top><em>region</em>&nbsp;</td><td>The ID of the region to examine. </td></tr>
    <tr><td valign=top><em>x</em>&nbsp;</td><td>The X coordinates of the rectangle to test. </td></tr>
    <tr><td valign=top><em>y</em>&nbsp;</td><td>The Y coordinates of the rectangle to test. </td></tr>
    <tr><td valign=top><em>w</em>&nbsp;</td><td>The width of the rectangle to test. </td></tr>
    <tr><td valign=top><em>h</em>&nbsp;</td><td>The height of the rectangle to test. </td></tr>
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</dl>
<dl compact><dt><b>Returns:</b></dt><dd>GR_RECT_PARTIN, GR_RECT_ALLIN, or GR_RECT_OUT. </dd></dl>
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<a name="a7" doxytag="nano-X.h::GrSetGCRegion"></a><p>
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          <td class="md" nowrap valign="top"> void GrSetGCRegion </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">GR_GC_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>gc</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>region</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
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<p>
Sets the clip mask of the specified graphics context to the specified region.
<p>
Subsequent drawing operations using this graphics context will not draw outside the specified region. The region ID can be set to 0 to remove the clipping region from the specified graphics context.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>gc</em>&nbsp;</td><td>The ID of the graphics context to set the clip mask of. </td></tr>
    <tr><td valign=top><em>region</em>&nbsp;</td><td>The ID of the region to use as the clip mask, or 0 for none. </td></tr>
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<a name="a4" doxytag="nano-X.h::GrSubtractRegion"></a><p>
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          <td class="md" nowrap valign="top"> void GrSubtractRegion </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>dst_rgn</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>src_rgn1</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>src_rgn2</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
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<p>
Subtracts the second source region from the first source region and places the result in the specified destination region.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign=top><em>dst_rgn</em>&nbsp;</td><td>The ID of the destination region. </td></tr>
    <tr><td valign=top><em>src_rgn1</em>&nbsp;</td><td>The ID of the first source region. </td></tr>
    <tr><td valign=top><em>src_rgn2</em>&nbsp;</td><td>The ID of the second source region. </td></tr>
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<a name="a2" doxytag="nano-X.h::GrUnionRectWithRegion"></a><p>
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          <td class="md" nowrap valign="top"> void GrUnionRectWithRegion </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>region</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap><a class="el" href="structGR__RECT.html">GR_RECT</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>rect</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
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<p>
Makes a union of the specified region and the specified rectangle.
<p>
Places the result back in the source region.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign=top><em>region</em>&nbsp;</td><td>The ID of the region to modify. </td></tr>
    <tr><td valign=top><em>rect</em>&nbsp;</td><td>A pointer to the rectangle to add to the region. </td></tr>
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<a name="a3" doxytag="nano-X.h::GrUnionRegion"></a><p>
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          <td class="md" nowrap valign="top"> void GrUnionRegion </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>dst_rgn</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>src_rgn1</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>src_rgn2</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
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<p>
Makes a union of two regions.
<p>
Places the result in the specified destination region.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign=top><em>dst_rgn</em>&nbsp;</td><td>The ID of the destination region. </td></tr>
    <tr><td valign=top><em>src_rgn1</em>&nbsp;</td><td>The ID of the first source region. </td></tr>
    <tr><td valign=top><em>src_rgn2</em>&nbsp;</td><td>The ID of the second source region. </td></tr>
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<a name="a5" doxytag="nano-X.h::GrXorRegion"></a><p>
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          <td class="md" nowrap valign="top"> void GrXorRegion </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>dst_rgn</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>src_rgn1</em>, </td>
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          <td></td>
          <td></td>
          <td class="md" nowrap>GR_REGION_ID&nbsp;</td>
          <td class="mdname" nowrap> <em>src_rgn2</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
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<p>
Performs a logical exclusive OR operation on the specified source regions and places the result in the destination region.
<p>
The destination region will contain only the parts of the source regions which do not overlap.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign=top><em>dst_rgn</em>&nbsp;</td><td>The ID of the destination region. </td></tr>
    <tr><td valign=top><em>src_rgn1</em>&nbsp;</td><td>The ID of the first source region. </td></tr>
    <tr><td valign=top><em>src_rgn2</em>&nbsp;</td><td>The ID of the second source region. </td></tr>
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