当前位置:网站首页>Image processing toolkit imagexpresshow to view events
Image processing toolkit imagexpresshow to view events
2020-11-06 22:27:00 【roffey】
ImagXpress Is the most advanced color image and photo image processing kit , It's released in the form of :.NET Control 、COM Components 、VC Components . use ImagXpress , Developers build applications that support image browsing 、 edit 、 Print 、TWAIN scanning 、 File format conversion and so on .ImagXpress A comprehensive set of image processing functions is provided , Support 30 Multiple file formats , With amazing image processing speed .ImagXpress The image function provided also includes : Copy 、 rotate 、 Keep the image transparent 、 A variety of image scaling algorithms 、 Advanced scroll bar 、 Automatic resizing and image fusion .
- After selecting the tool , Will lead to ToolbarSelect event , To tell the application which tool to choose .
- When using tools , In the following cases ,ToolUse Event raises the notification application : Click the tool , The tool is active and is no longer in use .
- When the toolbar window opens , take trigger ToolbarOpen event .
- When the toolbar window is closed , take trigger ToolbarClose event .
- After selecting the menu item , Will pop up MenuSelect To inform the application of the choice . When this event was triggered , Put the menu ID Provided to the event handler .
VB Example
// Write the event handler to the scheduler when the user makes a menu selection
Sub IX1_MenuSelect (long menuType, long tool, long topMenuID, long subMenuID, long user1, long user2)
if (menuType = MenuContext) then
Select Case topMenuID
Case 100 ' Color
MyObj.Color = user1
Case 200 ' Size
MyObj.Size = user1
Case 300 ' Type
SelectCase subMenuID
Case 310
MyObj.DrawLine
Case 320
MyObj.DrawEllipse
Case 330
MyObj.DrawRect
End Select
end if
end sub
End user scrolling
The end user of the application can use the scroll bar to change in “ View the window ” The image section of view in .
If the scroll bar is enabled , When you click the scroll bar , Will lead to Scroll event , To alert the application that there is a scrolling request . Set up ScrollBarLargeChangeH,ScrollBarLargeChangeV,ScrollBarSmallChangeH and ScrollBarSmallChangeV Property to indicate the amount of requested changes to the horizontal and vertical position of the view . The view updates on the next paint .
End user cursor moves
Track the position of the cursor in the displayed image , As shown below :
- stay XPOS and YPos The read-only property returns the logical position of the cursor in the displayed image , In pixels .
- Of DIBXpos and DIBYpos Read only property relative to return cursor position to DIB, In pixels .
- Described PixelColor The color of the pixel returned by the read-only property at the current cursor position .
To display the coordinates of the image and DIB Coordinate conversion between coordinates in , Please use TranslateX and TranslateY Method .
End user mouse and button operations
- When the end user of the application uses the mouse , Mouse events ( Click on ,DBLCLICK, Of MouseUp, Of MouseDown,MouseMove event ,OLEDragDrop and OLEDragOver), If they have enabled ( raise EventSetEnabled,EventGetEnabled).
- The end user of the application presses a key , Key events ( Of KeyDown, Key response ,KEYUP If the key is enabled () elevated KeysGetEnabled,KeysSetEnabled), If critical events are enabled (EventSetEnabled,EventGetEnabled).
This article is reprinted from 【 Huidu technology 】. Any reprint is welcome , But be sure to indicate the source 、 Do not modify the original link , Respect for the work of others
版权声明
本文为[roffey]所创,转载请带上原文链接,感谢
边栏推荐
- 上海巨微专用蓝牙广播芯片
- 2020-08-15:什么情况下数据任务需要优化?
- The isolation level of transaction and its problems
- Countdown | 2020 PostgreSQL Asia Conference - agenda arrangement of Chinese sub Forum
- Jenkins installation and deployment process
- How to add modules to nginx image?
- Message queue - Analysis
- VARCHART XGantt入门教程
- What grammar is it? ]
- Js数组-数组的用法全在这里(数组方法的重构、数组的遍历、数组的去重,数组的判断与转换)
猜你喜欢
高速公路二维码定位报警系统
Novice guidance and event management system in game development
非易失性MRAM存储器应用于各级高速缓存
Summary of common SQL statements
[self taught unity2d legendary game development] map editor
Erd-online free online database modeling tool
2020-08-20:GO语言中的协程与Python中的协程的区别?
Detect certificate expiration script
2020-09-04: do you understand the function call convention?
Code generator plug-in and creator preform file analysis
随机推荐
条形码识别器Dynamsoft Barcode Reader v7.5全新上线!
[forward] how to view UserData in Lua
ImageMagick - 添加水印
2020-08-17:详细说下数据倾斜怎么解决?
2020-08-20:GO语言中的协程与Python中的协程的区别?
小程序商城系统插件代码该如何写?怎么用代码检查添加插件是否成功?
Windows 10 蓝牙管理页面'添加蓝牙或其他设备'选项点击无响应的解决方案
August 14, 2020: what are the execution engines for data tasks?
Interviewer: how about shardingsphere
迅为iMX6开发板-设备树内核-menuconfig的使用
Bluetooth broadcast chip for Shanghai giant micro
[elastic search engine]
Open source a set of minimalist front and rear end separation project scaffold
Design of NAND flash interface control
2020-08-15:什么情况下数据任务需要优化?
JVM class loading mechanism
2020-08-17: how to solve data skew in detail?
Mobile pixel adaptation scheme
Unexpected element.. required element
The use of Xunwei imx6 development board device tree kernel menuconfig