短视频带货源码，观看视频时双击放大

短视频带货源码，观看视频时双击放大实现的相关代码

1.在播放视频的DIALOG里面获取当前播放框

1	<br>CRect curRect;<br>GetClientRect(&curRect);

​2.确定当前需要放大的倍数，确定放大后的框长和宽（z为倍数）。

1

<br>normalWidth = curRect.right;<br>normalHeight = curRect.bottom;<br>amplifyWidth = curRect.right * z;<br>amplifyHeight = curRect.bottom * z;<br>else <br>{<br>if (point.x<normalWidth / 2*z)<br>{<br>if (point.y < normalHeight / 2*z || point.y>normalHeight - normalHeight / 2*z)<br>{<br>if (point.y<normalHeight / 2*z)<br>{<br>MoveWindow(0, 0, amplifyWidth, amplifyHeight);<br>}<br>else<br>{<br>MoveWindow(0, -(amplifyHeight - normalHeight), amplifyWidth, amplifyHeight);<br>}<br>}<br>else<br>{<br>MoveWindow(0, -point.y * z+0.5*normalHeight, amplifyWidth, amplifyHeight);<br>}<br>}<br>else if (point.x>normalWidth - normalWidth / 2*z)<br>{<br>if (point.y < normalHeight / 2*z || point.y>normalHeight - normalHeight / 2*z)<br>{<br>if (point.y<normalHeight / 2*z)<br>{<br>MoveWindow(-(amplifyWidth - normalWidth), 0, amplifyWidth, amplifyHeight);<br>}<br>else<br>{<br>MoveWindow(-(amplifyWidth - normalWidth), -(amplifyHeight - normalHeight), amplifyWidth, amplifyHeight);<br>}<br>}<br>else<br>{<br>MoveWindow(-(amplifyWidth - normalWidth), -point.y * z+0.5*normalHeight, amplifyWidth, amplifyHeight);<br>}<br>}<br>else if (point.y<normalHeight / 2*z) <br>{<br>MoveWindow(-point.x * z+0.5*normalWidth, 0, amplifyWidth, amplifyHeight);<br>}<br>else <br>{<br>MoveWindow(-point.x * z+0.5*normalWidth, -(amplifyHeight - normalHeight), amplifyWidth, amplifyHeight);<br>}

3.到这里逻辑性的代码基本上就结束了。如果要进行放大，以及放大还原。那就在外面套一层if判断。

1	<br>if (isZoom==false)<br>{<br>isZoom=true;<br>········<br>}<br>else<br>{<br>MoveWindow(0,0,normalWidth,normalHeight);<br>isZoom = false;<br>}

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