Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Downloads
Add
Search: 
Search

Detect MouseEnter in grid cells without the cells having the focus
Gregory Adam
Allows to detect MouseEnter (see Thread#1398534 ) in grid columns The cells do not need to have the focus It's an object that has to be added to the form. Once added to the form you can tell it to 'watch' one or more columns. To add a 'watched' column you call a method passing - the ControlSource of the column - a FieldExpression that will be evaluated - a form method or any function name that will be called when the mouse enters the column. The corresponding FieldExpression is added as a parameter See sample When running the sample and moving the mouse over the command buttons of the grid - watch the textboxes above the grid
Created on
14 years ago
Downloads
1520
File type
Freeware
Rating
5.00/5.00
General information
URL:
GridCompanion.zip
Rating:
5.00/5.00 (2 rates) Rate this item
Description
Allows to detect a MouseEnter into one or more columns of a grid. The grid cells do not need to have the focus Upon a mouse enter, a form method or a function will be called with its corresponding evaluated FieldExpression The ControlSource of the column to watch does not have to be equal to the FieldExpression, but it may At the end of the grid's init or in the form init See sample in Form.Grid1.Init (at the end) 
local CompanionObj

do case
case !GridCompanion_Add(GridObjectReference, @m.CompanionObj)
	&& error
case !m.CompanionObj.ColumnMouseWatcher_Add( ;
				ControlSourceOfColumnToWatch, ;
				FieldExpression, ;
				FormMethod ;
			)
	&& error

endcase

To remove a 'watched' column
	ColumnMouseWatcher_Remove(ControlSourceOfColumnToWatch)
How it works A DynamicFontShadow clause is added to the Column Evaluation of that clause adds the evaluated FieldExpression to a collection Dynamic clauses are evaluated left to right and top to bottom In order to keep the collection in sync with the part of the grid that is displayed, it has to be cleared at certain points in time (BindEvent to some events of the grid) A way to force the re-evaluation of the Dynamic clauses is to change the grid's Height (resize)
Created by
Gregory Adam

Comments
Add a comment
More downloads created from this member
MD5 hash algorithm (C#)
Gregory Adam
MD5 hash algorithm implementation : http://www.faqs.org/rfcs/rfc1321.html
Created on
14 years ago
Downloads
1967
File type
Freeware
RC4 Encryption (C#)
Gregory Adam
RC4 encryption class .......................................................
Created on
14 years ago
Downloads
1610
File type
Freeware
RegexPatternBuilder class (C#)
Gregory Adam
Complex patterns are hard to build. This class allows to build the pieces in a hierarchical way.
Created on
14 years ago
Downloads
968
File type
Freeware
Generic Topological Sort (C#)
Gregory Adam
A topological sort sorts out dependencies and returns an order in which each predecessor is processed before any of its successors.
Created on
14 years ago
Downloads
1844
File type
Freeware
vfp.fll - Callback for vfp
Gregory Adam
Collection of 4 VFP functions in an FLL: (1) at_bm() - Tuned Boyer-Moore string search (2) AddProperty() - add Property to any object (3) Callback_Set() - returns a function address that can be used for callbacks (4) Callback_Release() - releases a previously allocated function address. Includes...
Created on
20 years ago
Downloads
1786
File type
SafeArray
Gregory Adam
SafeArray class. Up to 13 dimensions, lower and upper bounds per dimension, number of elements limited by available space in pagefile. Supports mixed type arrays, as well as arrays of a same type like String, Char, Short, Integer, Float and Double
Created on
20 years ago
Downloads
904
File type
Structure of 'Save To' mem file
Gregory Adam
It just goes through the file and invokes the function supplied for each variable. This means that you can use MemFileShow() without any modification and customize your needs by writing a function and supplying its name. See Mem_defined() in the program.
Created on
21 years ago
Downloads
1211
File type
Rating
5.00/5.00
Folder-and-File related API-based functions
Gregory Adam
A few Folder-and-File related functions based on API, such as an extended adir_(), FolderCopy(), FolderRemove(), FolderMove(), FileExists(), etc. They were developed on Win98SE, VFP6 SP3. Tested on Win98 SE and Win2K as far. Should work on Win95. Be careful with the FolderRemove(). It does not ask ...
Created on
22 years ago
Downloads
1603
File type
Rating
4.50/5.00