events

问题 I have class //Create GroupFieldArgs as an EventArgs public class GroupFieldArgs : EventArgs { private string groupName = string.Empty; private int aggregateValue = 0; //Get the fieldName public string GroupName { set { groupName = value; } get { return groupName; } } //Get the aggregate value public int AggregateValue { set { aggregateValue = value; } get { return aggregateValue; } } } I have another class that creates a event handler public class Groupby { public event EventHandler eh; }

问题 I have a Panel named panel1. panel1 has a "mosuseHover" eventhandler .panel1 also has some controls like pictureBox , label etc. When i move mouse on panel1 , the event fire correctly , but when the mouse courser goes on panel1 controls , like pictureBox , the event not work . how can i make event to be invoke when mouse courser is on child controls. I should note that i dont want create eventhandler for each child contol. Best Regards 回答1: You can add an IMessageFilter to implement your own

问题 I have a Panel named panel1. panel1 has a "mosuseHover" eventhandler .panel1 also has some controls like pictureBox , label etc. When i move mouse on panel1 , the event fire correctly , but when the mouse courser goes on panel1 controls , like pictureBox , the event not work . how can i make event to be invoke when mouse courser is on child controls. I should note that i dont want create eventhandler for each child contol. Best Regards 回答1: You can add an IMessageFilter to implement your own

问题 I've read some things about async waits in Actionscript but can't really do it in practice. Here's a short, simplified version of my code I have in a class: private function getXML():void { var xmlLoader:URLLoader = new URLLoader(); xmlLoader.addEventListener(Event.COMPLETE, loadXML); xmlLoader.load(new URLRequest("test.xml")); } private function loadXML(evt:Event):void { var xmlData:XML = new XML(evt.target.data); this.parseResults(xmlData); } private function parseResults(resultsInput:XML)

问题 I have a little problem here. I'm trying to transfer/pass/raise the events of an owned form to his parent. Lets look at my example: Lets say i have a form that initialize a CustomPanel (simply a class that inherits from System.Windows.Forms.Panel). It also have an event handler (it could be an other event, not necessarily a click event): Public Sub New() Me.Size = New Size(1000,1000) Dim pnl1 As New CustomPanel() pnl1.Location = New Point(0,0) pnl1.size = New Size(100,100) Me.Controls.Add

问题 This has been asked quite a few times, but still. In GridView is defined event OnSelectedIndexChanged. My expectation is, that if I click on a row in gridview, the event will be fired. I managed to do the same with image buttons, but I want the entire row to be clickable. <asp:GridView runat="server" ID="gameGrid" PageSize="20" PagerSettings-Mode="NextPreviousFirstLast" OnRowDataBound="GameGrid_RowDataBound" OnPageIndexChanging="GameGrid_PageIndexChanging" AutoGenerateColumns="false" CssClass

问题 Is that possible in wpf, in main window will capture the event of the page inside the frame element? <Window> <Grid> <TextBlock x:Name="lblEvent"/> <Frame Source="Page1.xaml"/> </Grid> </Window> <Page> <Grid> <Button Content="Click Me"/> </Grid> </Page> If the button has been clicked, the textblock in the main window will update the text to "Page1 Button click". 回答1: If you use MVVM patter this would be very easy: Define your ViewModel class: class MyViewModel:INotifyPropertyChanged { private

问题 Here is a "hello world" button that display a window and button. I would like to do a cout or any other custom functionality when the button is clicked but I'm stuck. #include <QApplication> #include <QPushButton> #include <iostream> int main(int argc, char **argv){ // create app QApplication app (argc, argv); // create window QWidget window; window.setWindowTitle("MyWindow"); window.setFixedSize(600, 480); // create button QPushButton *button = new QPushButton(&window); button->setGeometry

问题 I have an MCU connected to the computer through a serial interface. The MCU might send data at regular intervals or very seldom depending on the type of sensor connected to it. So I want to have a python function that gets called whenever there is data incoming from the serial port instead of polling all the time. After reading a lot of similar questions (Small Example for pyserial using Threading. PySerial/Arduino, PySerial/interrupt mode, Python Serial listener, and so on), I came to the

问题 I have an MCU connected to the computer through a serial interface. The MCU might send data at regular intervals or very seldom depending on the type of sensor connected to it. So I want to have a python function that gets called whenever there is data incoming from the serial port instead of polling all the time. After reading a lot of similar questions (Small Example for pyserial using Threading. PySerial/Arduino, PySerial/interrupt mode, Python Serial listener, and so on), I came to the