As3 打印问题，打印或取消后出现空白 swf [英] As3 printing problem, blanks swf after print or cancel

问题描述

回到 as3 打印中的另一个问题

ok back at another issues in as3 printing

//Function to print entire screen
function printFunction(event:MouseEvent):void
{
    var myPrintJob:PrintJob = new PrintJob();
    var oldScaleX:Number = root.scaleX;
    var oldScaleY:Number = root.scaleY;

    //Start the print job
    myPrintJob.start();

    //Figure out the new scale
    var newScaleX:Number = myPrintJob.paperWidth/root.width;
    var newScaleY:Number = myPrintJob.paperHeight/root.height;

    //Shrink in both the X and Y directions by the same amount (keep the same ratio)
    if(newScaleX < newScaleY)
        newScaleY = newScaleX;
    else
        newScaleX = newScaleY;

    root.scaleX = newScaleX;
    root.scaleY = newScaleY;

    //Print the page
    myPrintJob.addPage(Sprite(root));
    myPrintJob.send();

    //Reset the scale to the old values
    root.scaleX = oldScaleX;
    root.scaleY = oldScaleY;
}

我似乎找不到任何对此真正有用的东西.当我在打印对话框上单击取消时，我收到下面的错误并且它使我的 swf 空白.

I cant seem to find anything thats really helpful with this. When i click cancel on the print dialog box, i get error below and it blanks out my swf.

错误在于，每当我尝试打印并取消它时，甚至当我成功打印时，swf 都会变为空白.

The error consists, that whenever i try to print and cancel it, or even when i do succesfully print, swf goes blank.

推荐答案

有两种打印类型，矢量和位图.因为您只是传入根，所以它会尝试将所有内容打印为向量.但是您可能会看到，在某些操作系统上的某些 Flash 播放器版本中，矢量打印不起作用.我通常会创建您想要的显示对象的位图快照并打印出来.

There are two printing types, vector and bitmap. Because you are just passing in the root it will try to print everything as a vector. But what you might be seeing is that in some versions of the Flash player on some operating systems vector printing doesn't work. I normally create a bitmap snapshot of the displayobject that you want and print this.

<代码>var bitmapData:BitmapData = new BitmapData(root.width, root.height);bitmapData.draw(root);var printThis:Bitmap = new Bitmap(bitmapData);

确保在打印之前将其添加到舞台，以便预览工作并注意最大位图数据大小.完成后删除位图.

Make sure you add it to the stage before you print so that preview works and mind the max bitmap data size. When you are finished delete the bitmap.

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