有个不必现错误，预览初步完成

core_form/frmupload/frmupload.cpp

@@ -50,16 +50,20 @@ void FrmUpload::slot_uploadFileSec(QString url)
 
     if (copyType == COPY_TYPE_MARKDOWN) {
         clipboard->setText(QString("![](%1)").arg(url));
+        emit signal_uploadSuccess(url);
     }
     if (copyType == COPY_TYPE_URL) {
         clipboard->setText(url);
+        emit signal_uploadSuccess(url);
     }
     if (copyType == COPY_TYPE_UBB) {
         // [IMG]https://imagehyj.oss-cn-hangzhou.aliyuncs.com/blog/logo512.png[/IMG]
         clipboard->setText(QString("[IMG]%1[/IMG]").arg(url));
+        emit signal_uploadSuccess(url);
     }
     if (copyType == COPY_TYPE_HTML) {
         clipboard->setText(QString("<img src=\"%1\"/>").arg(url));
+        emit signal_uploadSuccess(url);
 
         // QThread::sleep(50);
     }