用flash调用VC打开文件对话框，取得路径。

    本来想用flash的as2调用html+javascript的方法取得本地路径，但项目催得紧，没有时间研究基本不会的html了。只好使用熟悉的vc，捣鼓了一整天，凑合出一个解决方法来。不罗嗦了，见正文。
======================flash端的as2脚本如下：
//call Open file dialog
//fscommand("exec", "deleteFile.exe");
//fscommand("exec", "forFlash.exe");
System.useCodepage = true;
//System.setClipboard( "Hello   world ");
var gFilePath:String;
function btn1_fun() {
var my_lv:LoadVars = new LoadVars();
var bIsStopWait:Boolean = false;
var intervalId:Number;
var duration:Number = 300000;//5 minus
fscommand("exec", "openFile.exe");
intervalId = setInterval(timerEvent, duration);
my_lv.load("fscommand/filePath.txt",my_lv,"GET");
function timerEvent():Void {
bIsStopWait = true;
clearInterval(intervalId);
title_txt.text = "Time is over.";
//my_lv.load("fscommand/filePath.txt",my_lv,"GET");
}
my_lv.onData = function(src:String) {
if (src == undefined) {
trace("Error loading title.");
title_txt.text = "loading...";
if (true == bIsStopWait) {
title_txt.text = "Time is over.";
bIsStopWait = false;
return;
}
my_lv.load("fscommand/filePath.txt",my_lv,"GET");
return;
} else {
clearInterval(intervalId);
if ("Error_Or_Cancel" == src) {
title_txt.text = "User not open a file.";
} else {
title_txt.text = src;
loadContent(src);

//file path process
gFilePath=src;
}
//call  delete path file
fscommand("exec", "deleteFile.exe");
return;
}
};
}
function loadContent(pCon:String) {
var my2_lv:LoadVars = new LoadVars();
my2_lv.onData = function(src:String) {
if (src == undefined) {
trace("Error loading content.");
return;
}
content_txt.text = src;
};
my2_lv.load(pCon,my_lv,"GET");
}
//------------------background-------------------------
function btn2_fun() {
var my_lv:LoadVars = new LoadVars();
var bIsStopWait:Boolean =