屏幕捕获错误 [英] Error in screen capture

问题描述

这是我编写的用于捕获屏幕(tabletable Google地图)的代码，但是它在var activeX中没有任何价值，并显示错误"null is null object" ...是否有解决方案?

This s the code i had written to capture a screen(a tablegoogle map) but it is getting no value in var activeX and showing error "null is a null object"...Is there any solution?

function CaptureScreen() {
                try {

                    var activeX = new ActiveXObject("ActiveX.ExeActivator");

          document.parentWindow.moveTo(0, 0);
                    document.parentWindow.resizeTo(document.parentWindow.screen.width, document.parentWindow.screen.height);

                    var table = document.getElementById("tblGoogleMap");


                    var x = document.parentWindow.screenLeft + table.getClientRects()[0].left;
                    var y = document.parentWindow.screenTop + table.getClientRects()[0].top;
                    var width = table.offsetWidth;
                    var height = table.offsetHeight;


//                    //var activeX = new ActiveXObject("ScreenCaptureActiveX.ScreenCapture");
//                    //                            activeX.CaptureScreen(x, y, width, height);




                }

                catch (ex) {
                    if (ex.message == "Automation server can't create object") {

                       $find("mpInstallActivex").show();
                   }
                    else {

                        alert("Message : " + ex.message + " Description : " + ex.description);
                    }
                }
            }

推荐答案

find(" ).show(); } 其他 { alert(" + ex.message + " 说明:" + ex.description)； } } }

find("mpInstallActivex").show(); } else { alert("Message : " + ex.message + " Description : " + ex.description); } } }

请参阅此文章，可能会对您有所帮助
http://www.farooqazam.net/screen-capture-application-using-c-sharp / [^ ]

Refer this article, might help you
http://www.farooqazam.net/screen-capture-application-using-c-sharp/[^]

感谢您，我找到了c#屏幕捕获的解决方案.请转到 TeboScreen:基本的C#屏幕捕获应用程序以查看该文章.

Thanks to you i found a solution for c# screen capture.Go to TeboScreen: Basic C# Screen Capture Application to see the article.

这篇关于屏幕捕获错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！