diff --git a/src/renderer/src/assets/images/borderstyle.png b/src/renderer/src/assets/images/borderstyle.png
new file mode 100644
index 0000000..3ac9a18
Binary files /dev/null and b/src/renderer/src/assets/images/borderstyle.png differ
diff --git a/src/renderer/src/assets/images/borderwidth.png b/src/renderer/src/assets/images/borderwidth.png
new file mode 100644
index 0000000..e071630
Binary files /dev/null and b/src/renderer/src/assets/images/borderwidth.png differ
diff --git a/src/renderer/src/assets/images/mouse-pointer.png b/src/renderer/src/assets/images/mouse-pointer.png
new file mode 100644
index 0000000..6098aae
Binary files /dev/null and b/src/renderer/src/assets/images/mouse-pointer.png differ
diff --git a/src/renderer/src/components/whiteboard/whiteboard.vue b/src/renderer/src/components/whiteboard/whiteboard.vue
index 53fb108..0ec6a25 100644
--- a/src/renderer/src/components/whiteboard/whiteboard.vue
+++ b/src/renderer/src/components/whiteboard/whiteboard.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="whiteboart-container">
+  <div class="whiteboart-container" :style="{ height: height + 'px' }">
     <div class="canvasBox" ref="box"></div>
 
     <div class="footerLeft" @click.stop
@@ -15,7 +15,7 @@
           </el-tooltip>
         </div>
         <div class="blockBox">
-          <el-button @click="currentType = 'selection'"><el-image src="/src/assets/icons/pngjpg/mouse-pointer.png"
+          <el-button @click="currentType = 'selection'"><el-image src="/src/assets/images/mouse-pointer.png"
               style="width: 14px; height: 14px; color: silver" /></el-button>
         </div>
         <template v-if="type == 'design'">
@@ -53,7 +53,8 @@
           </el-radio-group>
         </template>
         <div class="blockBox">
-          <el-button @click="currentType = 'selection'" style="color:#848282" :icon="Camera" disabled></el-button>
+          <!-- <el-button @click="currentType = 'selection'" style="color:#848282" :icon="Camera" disabled></el-button> -->
+          <el-button @click="handleToolTypeChange('image')">图片</el-button>
         </div>
         <div class="blockBox" v-if="!readonly">
           <el-dropdown @command="handleToolTypeChange" placement="top">
@@ -71,7 +72,7 @@
                 <template v-if="type != 'design'">
                   <el-dropdown-item command="freedraw">画笔</el-dropdown-item>
                   <el-dropdown-item command="text">文字</el-dropdown-item>
-                  <el-dropdown-item command="image">图片</el-dropdown-item>
+                  <!-- <el-dropdown-item command="image">图片</el-dropdown-item> -->
                 </template>
               </el-dropdown-menu>
             </template>
@@ -122,7 +123,7 @@
           <!-- 边框样式 -->
           <div class="blockBox">
             <el-dropdown @command="updateStyle('lineDash', $event)" placement="top">
-              <el-button><el-image src="/src/assets/icons/pngjpg/borderstyle.png"
+              <el-button><el-image src="/src/assets/images/borderstyle.png"
                   style="width: 14px; height: 14px"></el-image></el-button>
               <template #dropdown>
                 <el-dropdown-menu>
@@ -134,8 +135,7 @@
             </el-dropdown>
           </div>
           <!--透明度-->
-          <div class="blockBox" style="width: 120px"
-            v-if="type == 'design' ? true : ['image'].includes(activeElement?.type) || hasSelectedElements">
+          <div class="blockBox" style="width: 120px">
             <el-tooltip effect="light" content="透明度" placement="top">
               <el-input-number v-model="globalAlpha" :min="0" :max="1" :step="0.1"
                 @change="updateStyle('globalAlpha', $event)"></el-input-number>
@@ -145,7 +145,7 @@
           <!-- 边框粗细 -->
           <div class="blockBox">
             <el-dropdown @command="updateStyle('lineWidth', $event)" placement="top">
-              <el-button><el-image src="/src/assets/icons/pngjpg/borderwidth.png"
+              <el-button><el-image src="/src/assets/images/borderwidth.png"
                   style="width: 14px; height: 14px"></el-image></el-button>
               <template #dropdown>
                 <el-dropdown-menu>
@@ -309,11 +309,11 @@ const props = defineProps({
     default: true
   },
   height: {
-    type: Number,
+    type: [Number,String],
     default: 700,
   },
   width: {
-    type: Number,
+    type: [Number,String],
     default: 1000,
   },
   data: {
@@ -685,6 +685,20 @@ const getCanvasBase64 = async () =>{
   return base64
 }
 
+const getCanvasBlob = async () =>{
+  return await app.exportImage({
+    type: 'image/jpeg',
+    renderBg: exportRenderBackground.value,
+    paddingX: exportImagePaddingX.value,
+    paddingY: exportImagePaddingY.value,
+    onlySelected: exportOnlySelected.value,
+    useBlob: true,
+    backgroundColor: '#ffffff'
+  })
+}
+
+
+
 watch(() => props.data, (newVal) => {
   if (newVal) {
     setCanvasData(newVal)
@@ -773,7 +787,8 @@ defineExpose({
   showFit,
   getCanvasJson,
   getCanvasBase64,
-  setCanvasData
+  setCanvasData,
+  getCanvasBlob
 })
 </script>
 
@@ -895,7 +910,7 @@ ol {
     font-size: 14px;
     color: #000;
 
-    :deep(.jsontree_tree) {
+    /deep/ .jsontree_tree {
       font-family: 'Trebuchet MS', Arial, sans-serif !important;
     }
   }
diff --git a/src/renderer/src/views/classTask/newClassTaskAssign/index.vue b/src/renderer/src/views/classTask/newClassTaskAssign/index.vue
index 910de4a..b90edd4 100644
--- a/src/renderer/src/views/classTask/newClassTaskAssign/index.vue
+++ b/src/renderer/src/views/classTask/newClassTaskAssign/index.vue
@@ -9,11 +9,11 @@
         <el-button type="primary"  @click="handleNewAllClass">设计新作业</el-button>
       </div>
     </div>
-    <div class="page-resource"> 
+    <div class="page-resource">
       <div class="page-left">
         <el-table
           ref="taskTable"
-          v-loading="loading"
+          v-loading="tasklist_loading"
           :data="taskList"
           :tree-props="{checkStrictly: true}"
           row-key="id"
@@ -41,11 +41,11 @@
         </el-table>
       </div>
 
-      <div v-if="currentRow.id == 0" style="width: 100%; height: 100%;"> 
+      <div v-if="currentRow.id == 0" style="width: 100%; height: 100%;">
         <!-- 默认的习题类型卡片 -->
         <Right @itemClick="handleItemClick" />
       </div>
-      
+
       <div v-if="(currentRow.worktype == '习题训练' || classWorkForm.worktype == '习题训练') && currentRow.id>0" class="page-center">
         <el-tabs v-model="activeAptTab" style="height: 100%;">
           <el-tab-pane label="自主搜题" name="自主搜题" class="prepare-center-zzst">
@@ -62,7 +62,7 @@
       <div v-if="(currentRow.worktype == '课堂展示' || classWorkForm.worktype == '课堂展示') && currentRow.id>0" class="page-center">
         <div v-loading="boardLoading" class="board-wrap" style="height: 100%; flex: 1; overflow: hidden;">
           <!-- <whiteboard v-if="isShowBoard" ref="boardref" :height="mainHeight - 150" :isShowSave="false" :data="whiteboardObj"/> -->
-          <whiteboard ref="boardref" height=" 100%" :isShowSave="false" :data="classWorkForm.whiteboardObj"/>
+          <whiteboard ref="boardref" height="100%" width="100%" :isShowSave="false" :data="classWorkForm.whiteboardObj"/>
         </div>
       </div>
       <div v-if="(currentRow.worktype == '常规作业' || classWorkForm.worktype == '常规作业')&& currentRow.id>0" class="page-center">
@@ -70,20 +70,20 @@
           <FileUpload v-model="classWorkForm.fileHomeworkList" :fileSize="800" :fileType="['mp3','mp4','doc','docx','xlsx','xls','pdf','ppt','pptx','jpg','jpeg','gif','png','txt']"/>
         </div>
       </div>
-      
+
       <div v-if="currentRow.id>0 " class="page-right">
         <div class="prepare-top" >
           <el-button v-if="currentRow.id != 1 " type="success" @click="openSet(currentRow,'item')">推 送</el-button>
           <el-button type="primary" @click="handleClassWorkSave">保 存</el-button>
         </div>
         <div class="prepare-con" >
-          <el-form 
-            ref="classWorkFormRef" 
-            :model="classWorkForm" 
-            label-width="90" 
+          <el-form
+            ref="classWorkFormRef"
+            :model="classWorkForm"
+            label-width="90"
             style=" height: 100%; overflow: hidden;display: flex;flex-direction: column;"
           >
-            <div > 
+            <div >
               <el-form-item label="作业名称">
                 <el-input v-model="classWorkForm.uniquekey" type="text" placeholder="请输入作业名称"/>
               </el-form-item>
@@ -93,8 +93,8 @@
                 <el-input v-if="classWorkForm.worktype == '课堂展示'" v-model="classWorkForm.question" type="textarea"  placeholder="请输入作业说明" />
               </el-form-item>
             </div>
-            
-            <div v-if="classWorkForm.worktype == '习题训练'" class="pageRight-list"> 
+
+            <div v-if="classWorkForm.worktype == '习题训练'" class="pageRight-list">
               <div :style="{height: '100%', 'overflow': 'auto', 'border':'1px dotted blue','border-radius':'5px', 'background-color': '#f7f7f7'}">
                 <template v-for="(item,index) in classWorkForm.quizlist" :key="item.id">
                   <div style="margin: 5px; background-color: white">
@@ -136,6 +136,10 @@ import whiteboard from '@/components/whiteboard/whiteboard.vue'
 import FileUpload from "@/components/FileUpload/index.vue";
 import Right from './Right/index.vue'
 
+import {
+  Delete
+} from '@element-plus/icons-vue'
+
 import SetHomework from '@/components/set-homework/index.vue'
 import { useGetHomework } from '@/hooks/useGetHomework'
 import { sessionStore } from '@/utils/store'
@@ -221,7 +225,7 @@ const selectable=(row, index)=>{
  * 获取 entpcourseid 获取作业列表
  */
 const initHomeWork = async()=> {
-  tasklist_loading.value = true; 
+  tasklist_loading.value = true;
   // const { res, chapterId } = await useGetHomework(courseObj.node);
   const { res, chapterId } = await useGetHomework(sessionStore.get('subject.curNode'));
   console.log('entpcourseid', chapterId);
@@ -233,7 +237,7 @@ const initHomeWork = async()=> {
 
 const handleNewAllClass = () => {
   taskTable.value.setCurrentRow({});// 清除表格选中项背景色
-  currentRow.value = {id:0}; // 作业设计 
+  currentRow.value = {id:0}; // 作业设计
   //--------
   classWorkForm.id = 0;
   classWorkForm.uniquekey = ""; // 作业唯一标识 作业名称
@@ -260,7 +264,7 @@ const handleDelete =() => {
       return delClasswork(ids.join(','));
     }).then(() => {
       taskTable.value.setCurrentRow({});// 清除表格选中项背景色
-      currentRow.value = {id:0}; // 作业设计 
+      currentRow.value = {id:0}; // 作业设计
       taskList.value = [];
       // initHomeWork();
       setTimeout(() => {
@@ -351,17 +355,17 @@ let propsformobj = reactive({
  * 选中的布置作业行
  */
 const handleCurrentChange = (val) => {
-  
+
   console.log(val,'???????????')
   if(val && val.id >0  ) {
     currentRow.value = val;
+    classWorkForm.worktype = val.worktype; //作业类型
     editListItem(val, courseObj).then((obj) => {
       if(obj){
         propsformobj = obj;
         // 新赋值的作业内容
         classWorkForm.id = obj.id;
         classWorkForm.uniquekey = cloneDeep(obj.uniquekey); // 作业唯一标识 作业名称
-        classWorkForm.worktype = cloneDeep(obj.worktype); //作业类型
         classWorkForm.title = cloneDeep(obj.title); // 作业说明
         classWorkForm.quizlist = cloneDeep(obj.quizlist);  // 作业习题列表内容
         classWorkForm.chooseWorkLists = cloneDeep(obj.chooseWorkLists);  // 作业框架梳理list
@@ -375,7 +379,7 @@ const handleCurrentChange = (val) => {
 
 /**
  * 添加作业
- * @param entpcourseworkid 
+ * @param entpcourseworkid
  */
 const handleClassWorkQuizAdd = (entpcourseworkid) => {
   var exist = false;
@@ -679,7 +683,7 @@ const editWork = async (cform) =>{
     // // 返回上一页
     // router.back()
   }
-  
+
 }
 //----
 
@@ -740,11 +744,11 @@ const editWork = async (cform) =>{
           text-align: left;
         }
       }
-      
+
     }
     .page-center{
       flex: 1;
-      // width: 100%;
+      //min-width: calc(100% - 675px);
       height: 100%;
       padding: 0 5px;
       margin: 0 5px;
@@ -756,8 +760,8 @@ const editWork = async (cform) =>{
         height: 100%;
         display: flex;
         flex-direction: column;
-        
-        
+
+
       }
       .prepare-center-xbtk{
         height: 100%;