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How to Set a Flat ListView Header Style
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| Total Hit (1372) |
There may be occasions where a flat-looking listview column header suits the design of your application more that the standard default button-style. By obtaining the handle to the header portion of the listview, and toggling its HDS_BUTTON style bits, the header takes on a flat appearance. Setting
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How to Set Item Indentation in a ListView
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| Total Hit (812) |
Many people erroneously believe that the 'control' used in displaying hierarchical data such as Outlook Express' news reader view is a treeview control with columns. Actually, the control is a ListView taking advantage of the comctl version 4-specific Indent member of the LV_ITEM structure. This pag
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Displaying Modal Form Activity on a Parent Form VB Progress Bar
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| Total Hit (1330) |
This is simple code that demonstrates how to use a normal VB progress bar on a parent form (SDI or MDI) to track the activity being performed in another form, even when that form is modal.
The demo also shows how to call SetParent to embed the progress bar inside the status bar panel.
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Adding a VB Toolbar to a VB StatusBar
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| Total Hit (1305) |
This code was prompted by a newsgroup request for code to place a VB command button inside a VB statusbar such that the button reacted normally to events yet was contained inside the status bar panel area. Attempts to use SetParent against the command button worked to re-parent the control, however
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Creating a Common Control Status Bar via API
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| Total Hit (1032) |
In this second article written for VBnet by Brad Martinez, Brad works out the magic behind the Win32 Status Bar common control (window) exposed by the common control library Comctl32.dll without the use of Comctl32.ocx. Subsequent pages will introduce more functionality in creating the control.
T
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Definitions of the ListView API Members
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| Total Hit (1147) |
This method is intended for Visual Basic 5 or Visual Basic 6 where the Common Control library used is the MSComCtl 5 version (comctl32.ocx). Because the VB6-specific mscomctl.ocx (Common Controls 6) is a complete implementation of comctl32.dll and not reliant on the version of comctl32.dll installed
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ListView Demo 1 - Obtaining the File Path
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| Total Hit (1126) |
This page details the code required to construct the base form, and the code necessary to retrieve the user's selection using the Windows Browse dialog.
When the demo is completed, the final app will retrieve the users selection and populate the listview with selected files from that folder, comp
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ListView Demo 2 - Populating the ListView
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This page details the code required to populate the listview control with files matching the selected file spec using the APIs FindFirstFile, FindNextFile and the WIN32_FIND_DATA type.
When the demo is completed, the final app will retrieve the users selection and populate the listview with selec
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ListView Demo 3 - Adding Sorting Functionality
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This page adds a popup menu and the routines necessary to sort and change list views.
When the demo is completed, the final app will retrieve the users selection and populate the listview with selected files from that folder, complete with associated icons, file name, file type, file size and cre
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ListView Demo 4 - Adding the Associated Icons
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By far the most complicated code yet, this page adds the code necessary to retrieve the Windows associated icon for a given file, assign it to an imagelist dynamically, and use it to display with the file in the listview. Among the features of the method detailed here is the reuse of an icon if it h
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Autosizing ListView Columns via API
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| Total Hit (1895) |
The ListView control in both VB5 and VB6 implementations supports SendMessage with the LVSCW_AUTOSIZE and LVSCW_AUTOSIZE_USEHEADER messages to cause the ListView to adjust its column widths to maximize data display. This page shows how to use these messages to resize the columns to fit the longest c
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Creating a Ledger-Style Listview Report Background
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| Total Hit (1249) |
This page takes a different approach based on the Picture property of the VB5 and VB6 listviews. With this demo, picture box properties are set to match the size and font of the listview. The demo then draws two filled rectangles inside the picture box corresponding to ledger colours specified, and,
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Customizing the ListView's Appearance via API
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| Total Hit (1756) |
Once again, the SendMessage API, in conjunction with the new extended style flags for the ListView control, provides a means to customize the appearance of the listview common control in a Visual Basic application.
By combining the new LVBKIMAGE structure (Type), and specifying the LVBKIF_SOURCE_U
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Detecting ListView SubItem Clicks in Normal And FullRowSelect Mode
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| Total Hit (1199) |
This page demonstrates using the LVHITTESTINFO type along with the LVM_SUBITEMHITTEST message to determine where on the control the mouse was clicked, regardless of the view mode or whether the FullRowSelect feature has been enabled (Label1). The code is provided in the MouseDown event to both take
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Determining a ListView's Visible Item Count
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This shows a quick call you can add to any ListView code to determine the number of currently-visible ListItems in the control when in Report mode. By calling SendMessage with the LVM_GETCOUNTPERPAGE message, the call returns the number of items that can be completely contained in the visible area o
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Highlighting a Listview Report Column
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| Total Hit (1669) |
Just as the picture property was used in Creating a Ledger-Style Listview Report Background to simulate a ledger-style background for the listview, this code provides a means to highlight the data in a specific column in the control using the same technique.
To do this, the the default background c
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How to Automatically Select (Track) a ListView Item
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By setting a ListView extended style bit using the API SendMessage with the message LVS_EX_TRACKSELECT, the ListView action changes. While a cursor is moving over the listview items, it is highlighted in coloured text (look at the line below the selection in the illustration.) If the cursor remains
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How to Add Checkboxes to a ListView
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This page demonstrates adding the ability to have checkmarks to the left of the item icon in report view. Under Win95 the check boxes are not not pretty.
By setting a ListView extended style bit using the API SendMessage with the message LVS_EX_CHECKBOXES, the ListView rows will have a left-most
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How to Add Images to a ListView Header
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| Total Hit (1005) |
In most Windows applications, a visual indication of the sorting direction of the currently active listview column header is indicated by an up or down arrow. This functionality has previously been unavailable to the Visual Basic developer. The method detailed here demonstrates the steps to add your
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How to Change the ListView Header Style
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| Total Hit (1894) |
Depending on the needs of your application, the standard header font of a listview may prove inadequate for your needs. Unfortunately, the listview API structures and constants do not provide a direct means to specify the font attributes of the header. But by using several standard API functions not
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How to Determine Selected ListItems
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A quick routine to demonstrate using SendMessage with LVM_GETSELECTEDCOUNT and LVM_GETNEXTITEM messages to traverse a listview to retrieve the indices to the selected items in a MultiSelect control. Also contains a portion of the LVM_SUBITEMHITTEST code from How to Deselect ListItems on Clicking a L
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How to Determine Re-Ordered Column Positions in a ListView
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| Total Hit (1523) |
Sending the listview extended style message LVS_EX_HEADERDRAGDROP enables repositioning/reordering of a ListView's main and subitem columns.
However, this does not alter the index of the columns to match their new physical locations. VB remains unaware that repositioning has taken place (since it
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How to Display Grid Lines in a ListView
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| Total Hit (1350) |
By setting a ListView extended style bit using the API SendMessage with the message LVS_EX_GRIDLINES, the ListView columns and rows will be separated by a grey grid line.
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How to Programmatically Select and Deselect All ListItems
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| Total Hit (1515) |
Using conventional methods, selecting and deselecting all items in a ListView typically involves iterating through the ListItems collection to set each item's selected property. By utilizing the SendMessage API with LVIS_SELECTED, this monotony can be reduced to a single call.
Note that this meth
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How to Reorder ListView Columns Programmatically
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| Total Hit (1461) |
We have seen how to allow the user to reorder columns by sending the HEADERDRAGDROP message. The listview control provides another means to reorder the report view columns - programmatically via the COLUMNORDERARRAY message. This page demonstrates this technique.
The principle is simple. We dim
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How to Select the Entire Row in a ListView
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| Total Hit (1660) |
By setting a ListView style bit using the Windows API SendMessage with the message LVS_EX_FULLROWSELECT, selecting an item will cause the selection rectangle to highlight and span the entire row. Removing this bit restores the default selection style.
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