短視訊帶貨原始碼，觀看視訊時雙擊放大

短視訊帶貨原始碼，觀看視訊時雙擊放大實現的相關程式碼

1.在播放視訊的DIALOG裡面獲取當前播放框

CRect curRect;
GetClientRect(&curRect);

2.確定當前需要放大的倍數，確定放大後的框長和寬（z為倍數）。

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

3.到這裡邏輯性的程式碼基本上就結束了。如果要進行放大，以及放大還原。那就在外面套一層if判斷。

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

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