It’s pretty common to want to update a column (or several columns) in one table with the value(s) from another table. Here is how to do it: UPDATE Table SET Table.col1 = other_table.col1, Table.col2 = other_table.col2 FROM Table INNER JOIN other_table ON Table.id = other_table.id WHERE … The structure of this syntax is always something…
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PowerBuilder – Add /Remove a Font at Runtime
Here is a way to add (and remove) a font to the user’s machine at runtime. You can also use this to check if a user has a particular font installed since the code also shows how to list all the installed fonts (need MS Word for this). Way back in my PB5 days I…
PowerBuilder – Next Key Service
As an extension of the next key stored procedure article, here is a pretty easy to implement a next surrogate key service to use with the PFC. If you don’t use the PFC it is still fairly easy to use with some modification. You can use this service anytime you want to get a sequential…
PowerBuilder – Move Frequently Chosen Items to Top of DropDownDataWindow
I’m looking at an application which basically records demographic information for a population. One of the fields listed is ‘primary language’ which has a typical dropdowndatawindow interface. I look at the options and BAM!, a huge alphabetical list (including Esperanto!). Now this application is generally used in the US so my guess is at least…
Next Key Service for Database tables
This provides for an easy way to generate key values for tables in a database when you don’t want to use a system generated value (like an IDENTITY column). The example is for MS SQLServer 2000 but could be adapted to any database which supports stored procedures. Note that this service assumes the key value…
PowerBuilder – Locating Windows folders
Here is an easy way to find the paths to the various Windows folders. oleobject lole_wshell lole_wshell = create oleobject lole_wshell.connecttonewobject( "wscript.shell") is_mydocspath = lole_wshell.SpecialFolders("MyDocuments") IF IsValid(lole_wshell) THEN Destroy lole_wshell /* other folders: AllUsersDesktop AllUsersStartMenu AllUsersPrograms AllUsersStartup Desktop Favorites Fonts MyDocuments NetHood PrintHood Programs Recent SendTo StartMenu Startup Templates */
PowerBuilder – Get Color Value of Pixel under Pointer
Here is a sample application which will give you the color value of the pixel the user clicked on on a picture control (this can be used for any object inherited from a dragobject). To see the list of draggable controls, open the Browser. All the objects in the hierarchy below dragobject are draggable. This…
PowerBuilder – Have Window Stay on Top
One common application technique is to have any notification windows stay on top of all others, even if subsequent windows are opened on top of them (and the notification window loses focus). This can easily be achieved via an external API call: SetWindowPos. From the MSDN: “Changes the size, position, and Z order of a…
PowerBuilder – Application Icon in the System Tray
One challenge for Powerbuilder developers today is the lack of current information/programming tips relating to more current (10 and above) versions. This also applies to Windows versions as well. There are a variety of different solutions to having an application icon in the System Tray but almost without exception they relate to Windows 95/98 primarily.…
PowerBuilder – Calling Methods on Separate Windows
If you need to trigger and event or call a function on another window within an application, here are two solutions. In you have an MDI application you need to get a reference to the sheet. The PFC has a method to get the sheets of a certain class called ‘of_getsheetsbyclass’. You call it and…
