Slow response to label.click event
in [Visual Studio]
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From: Peter on 18 Mar 2010 08:47 Hi, I have a label on a form and am using the label.click event to do a very simply task such as adding an item to a list box. If I rapidly click the label, I can only update the list box about every 300mS, ie clicking the lable updates the list box but then there is a delay before it is or can be updated again. If I add a command button and make the command button call the label.click event, the updating is virtually instantaneous, ie there is no discernable delay between clicking the command button and the list box being updated. Can anyone offer a suggestion how I might be able to make the response of clicking on the label as quick as clicking on the command button, please. Thanks, Peter
From: Auric__ on 18 Mar 2010 09:36 On Thu, 18 Mar 2010 12:47:38 GMT, Peter wrote: > I have a label on a form and am using the label.click event to do > a very simply task such as adding an item to a list box. > If I rapidly click the label, I can only update the list box about > every 300mS, ie clicking the lable updates the list box but then there > is a delay before it is or can be updated again. > If I add a command button and make the command button call the > label.click event, the updating is virtually instantaneous, ie there > is no discernable delay between clicking the command button and the > list box being updated. > Can anyone offer a suggestion how I might be able to make the response > of clicking on the label as quick as clicking on the command button, > please. Why is it so important that the list update in less time than 3/10 of a second? Do your users really sit there and just jam on that label repeatedly? -- - And knowing is half the battle! - Then what's the other half?
From: Peter on 18 Mar 2010 09:46 On Mar 18, 1:36 pm, "Auric__" <not.my.r...(a)email.address> wrote: > On Thu, 18 Mar 2010 12:47:38 GMT, Peter wrote: > > I have a label on a form and am using the label.click event to do > > a very simply task such as adding an item to a list box. > > If I rapidly click the label, I can only update the list box about > > every 300mS, ie clicking the lable updates the list box but then there > > is a delay before it is or can be updated again. > > If I add a command button and make the command button call the > > label.click event, the updating is virtually instantaneous, ie there > > is no discernable delay between clicking the command button and the > > list box being updated. > > Can anyone offer a suggestion how I might be able to make the response > > of clicking on the label as quick as clicking on the command button, > > please. > > Why is it so important that the list update in less time than 3/10 of a > second? Do your users really sit there and just jam on that label repeatedly? > It is not important at all - I am simply giving this as an example of what is happening. In the final application, rapid clicking of a label will be redrawing circles on the form and sending data via the serial port and this 300mS delay is then critical. However, all this is not really relevant to the basic problem which causes a 300mS delay to occur when I simply use the label.click event to update a list box and to which I am trying to find a way of avoiding. Thanks, Peter
From: Mike Williams on 18 Mar 2010 12:04 On 18 Mar, 12:47, Peter <peterleslier...(a)googlemail.com> wrote: > I have a label on a form and am using the label.click > event to do a very simply task such as adding an item > to a list box. If I rapidly click the label, I can > only update the list box about every 300mS, ie click > the lable updates the list box but then there is a > delay before it is or can be updated again. If I add > a command button and make the command button call the > label.click event, it is virtually instantaneous A Label has a DblClick event whereas a CommandButton does not, so the Label is seeing lots of your rapid clicks as a double click instead of an ordinary click, and the Click event is therefore not dealing with them. For the Label you can make it work the way you want by calling your code from both its Click evnt and its DblClick event. Mike
From: Peter on 18 Mar 2010 12:15
On Mar 18, 4:04 pm, Mike Williams <gagam...(a)yahoo.co.uk> wrote: > On 18 Mar, 12:47, Peter <peterleslier...(a)googlemail.com> wrote: > > > I have a label on a form and am using the label.click > > event to do a very simply task such as adding an item > > to a list box. If I rapidly click the label, I can > > only update the list box about every 300mS, ie click > > the lable updates the list box but then there is a > > delay before it is or can be updated again. If I add > > a command button and make the command button call the > > label.click event, it is virtually instantaneous > > A Label has a DblClick event whereas a CommandButton does not, so the > Label is seeing lots of your rapid clicks as a double click instead of > an ordinary click, and the Click event is therefore not dealing with > them. For the Label you can make it work the way you want by calling > your code from both its Click evnt and its DblClick event. > > Mike Hi Mike, Brilliant! Obvious now I stop and think about it but I'm sure it would have taken me forever to figure it out! VERY many thanks for your help. Peter |