Check if a textbox is empty

[lloydtech]

Hi,

How can we check a text box is empty or not? There is a Custom Page settings dialog in my wizard. In that I want to check whether a text box is empty or not. This is the code I have written, but by default "$MySQLHostNameHandle" contains some junk value!

code:




Var MySQLHostNameHandle



Function PageSettings

  ${NSD_CreateText}            25u 73u 100u 15u "$MySQLHostName"

  Pop $MySQLHostNameHandle

  strcmp $MySQLHostNameHandle "" ER33  OK33

  ER33:

  ${NSD_SetText} $MySQLHostNameHandle "localhost"

  OK33:

FunctionEnd

The intention of this code is, When the dialog is created for the first time, it has to fill the text box with "localhost", but if the user changes the textbox data, and he clicks "next" and "back", the text box has to contain the user supplied data than the default data..


How can I do this?

Thanks
Lloyd

[jiake]

Use a variable as the default value of the text box. Set the default value of this variable to "localhost" by StrCpy. Set the content of the text box to the variable when leaving the page or in event function (using ${NSD_OnChange}).

[lloydtech]

Thanks, it worked...