我想获取web中form里边的submit按钮信息

[shellfish567]

代码如下：

for (long i=0;i<form_num;i++)//遍历每一个表单
					{

						V_VT(&id) = VT_I4;
						V_I4(&id) = i;
						V_VT(&index) = VT_I4;
						V_I4(&index) = 0;
						if (pElementCol->item(id,index,&spDispatch)==S_OK)
						{
							if (spDispatch->QueryInterface(IID_IHTMLFormElement,(void**)&pFormElement)==S_OK)//获取FORMELEMENT
							{
								CComBSTR form_name;
								char ch_form[100];
								memset(ch_form,0,100);
								pFormElement->get_name(&form_name);
								CComBSTR_to_char(form_name,ch_form,100);
								memset(echo_data,0,1024);
								sprintf(echo_data,"第%d个表单名为：%s\n",i,ch_form);
								this->ui.textEdit->insertPlainText(echo_data);


								long item_num=0;
								if(pFormElement->get_length(&item_num)==S_OK)
								{
									for(long j=0;j<item_num;j++)
									{
										V_VT(&id) = VT_I4;
										V_I4(&id) = j;
										V_VT(&index) = VT_I4;
										V_I4(&index) = 0;
										if(pFormElement->item(id,index, &spDispatch)==S_OK)
										{
											if(spDispatch->QueryInterface(IID_IHTMLInputTextElement,(void**)&pInputElement)==S_OK)
											{
												CComBSTR value;
												CComBSTR name;
												CComBSTR type;
												CComBSTR cls_ID;
												pInputElement->get_type(&type);
												if(type==CComBSTR("text"))
												{
													pInputElement->get_name(&name);
													pInputElement->get_value(&value);
													memset(echo_data,0,1024);
													sprintf(echo_data,"输入框name:");
													CComBSTR_to_char(name,echo_data+strlen(echo_data),1024);
													sprintf(echo_data+strlen(echo_data),"输入框内的值：");
													CComBSTR_to_char(value,echo_data+strlen(echo_data),1024);
													strcat(echo_data,"\n");
													this->ui.textEdit->insertPlainText(echo_data);
												}
												else if(type==CComBSTR("password"))
												{
													pInputElement->get_name(&name);
													pInputElement->get_value(&value);
													memset(echo_data,0,1024);
													sprintf(echo_data,"密码框name:");
													CComBSTR_to_char(name,echo_data+strlen(echo_data),1024);
													sprintf(echo_data+strlen(echo_data),"密码框内的值：");
													CComBSTR_to_char(value,echo_data+strlen(echo_data),1024);
													strcat(echo_data,"\n");
													this->ui.textEdit->insertPlainText(echo_data);

												}

											}
											else if(spDispatch->QueryInterface(IID_IHTMLElement,(void**)&pElement)==S_OK)
											{
												CComBSTR value;
												CComBSTR name;
												CComBSTR type;
												CComBSTR cls_ID;
												pElement->get_type(&type);
											if(type==CComBSTR("submit"))
												{
													pButtonElement->get_name(&name);
													pButtonElement->get_value(&value);
													memset(echo_data,0,1024);
													sprintf(echo_data,"提交按钮name:");
													CComBSTR_to_char(name,echo_data+strlen(echo_data),1024);
													sprintf(echo_data+strlen(echo_data),"提交按钮内的值：");
													CComBSTR_to_char(value,echo_data+strlen(echo_data),1024);
													strcat(echo_data,"\n");
													this->ui.textEdit->insertPlainText(echo_data);
												}
											}
										}
									}
								}

[shellfish567]

问题如下： if(spDispatch->QueryInterface(IID_IHTMLInputTextElement,(void**)&pInputElement)==S_OK)当我这样获取元素的时候只能获取到输入框类型的元素，当我
else if(spDispatch->QueryInterface(IID_IHTMLElement,(void**)&pElement)==S_OK)这样获取的时候可以获取到所有元素，但是无法调用get_type，也没办法知道到底是不是submit按钮，查MSDN中IID_IHTMLButtonElement是最像的，可是根本获取不到submit，我就是想获取submit按钮，有什么办法？

[shellfish567]

自己解决了，是IID_IHTMLInputButtonElement。