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MAPINFO 10 HOW TO CREAYE BUFFER SOFTWARE
Progress Software Corporation makes all reasonable efforts to verify this information. The origins of the information on this site may be internal or external to Progress Software Corporation (“Progress”). HField:BUFFER-VALUE = fPhone:SCREEN-VALUE NO-ERROR. HField:BUFFER-VALUE = fName:SCREEN-VALUE IN FRAME f1 MESSAGE "Update canceled" VIEW-AS ALERT-BOX.ĪSSIGN hField = hBuffer:BUFFER-FIELD('name') MESSAGE "Add canceled" VIEW-AS ALERT-BOX. HBrowse:ADD-LIKE-COLUMN('customer.phone').ĭEFINE VARIABLE bCreate AS LOGICAL NO-UNDO.ĪSSIGN bCreate = hBuffer:BUFFER-CREATE(). HBrowse:ADD-LIKE-COLUMN('customer.name'). HBrowse:ADD-LIKE-COLUMN('customer.custnum'). HQuery:QUERY-PREPARE("FOR EACH customer NO-LOCK"). WITH SIDE-LABELS SIZE 132 BY 18 THREE-D NO-LABELS.ĭEFINE VARIABLE hColumn AS WIDGET-HANDLE NO-UNDO.ĪSSIGN hColumn = hBrowse:GET-BROWSE-COLUMN(2)įName:SCREEN-VALUE IN FRAME f1 = hColumn:SCREEN-VALUEįPhone:SCREEN-VALUE = hColumn:SCREEN-VALUE.
MAPINFO 10 HOW TO CREAYE BUFFER UPDATE
Hope it’s works for you too.The following code example shows how to create, delete and update records in a dynamic buffer:ĭEFINE BUTTON bQuit LABEL "&Quit" AUTO-ENDKEY.ĭEFINE BUTTON bUpdate LABEL "&Update Record".ĭEFINE BUTTON bDelete LABEL "&Delete Record".ĭEFINE VARIABLE hQuery AS HANDLE NO-UNDO.ĭEFINE VARIABLE hBuffer AS HANDLE NO-UNDO.ĭEFINE VARIABLE hBrowse AS HANDLE NO-UNDO.ĭEFINE VARIABLE hField AS HANDLE NO-UNDO.ĭEFINE VARIABLE fName AS CHARACTER NO-UNDO FORMAT "X(30)".ĭEFINE VARIABLE fPhone AS CHARACTER NO-UNDO FORMAT "X(20)".įUNCTION setValues RETURN LOGICAL FORWARD.ĬREATE BUFFER hBuffer FOR TABLE "Customer". Run tests with map_gst_buffer(buffer, | ) as mapped:
Load Gstreamer from shared map_gst_buffer(pbuffer, flags):
GST_PADDING is default padding for structues (from gstconfig).("_gst_reserved", c_void_p * GST_PADDING)] ("user_data", c_void_p * 4), # gpointer user_data ("data", POINTER(c_byte)), # guint8 *data _fields_ = [("memory", c_void_p), # GstMemory *memory Define Gst.MapInfo in proper way (using C struct): from ctypes import * The solution is taken from stb-tester’s open source projects ( Github) #1. Instead of calling (), use ctypes to call gst_buffer_map() and gst_buffer_unmap(). This is because PyGObject does not properly expose struct MapInfo. Now, let replace lower case ‘l‘ on upper case ‘L’: map_info.data = "L"īut you’ll get and error: 'bytes' object does not support item assignment ret, map_info = buffer.map( | )ĭata itself is accessible in data field. In order to change something in buffer it’s required to map buffer to Gst.MapInfo with read/write flags. Let’s create Gst.Buffer from simple string. Most common issues connected to Gst.Buffer. Gstreamer in Python has some issues when it comes to advanced filters, plugins or behaviour. Estimated reading time: 10m, with code, no images:( Want to modify Gst.Buffer in your Gstreamer application? Next information could be very useful.