 |
Image Processing Using DIB Sections
|
| Total Hit (819) |
This sample demonstrates a new 24 bit image processor using the DIB Section GDI object, allowing you to perform a whole raft of standard Image Processing functions, including blurring, sharpening, colourising, resampling and image arithmetic.
|
Rating
 |
|
|
|
Colour Depth Control
|
| Total Hit (624) |
In VB, you cannot change the colour depth of a bitmap. This article presents classes allowing you to reduce or increase the colour depth using a number of different methods and also to save the resulting image to disk as a bitmap with the specified colour depth.
....Read More |
| Rating
|
|
|
|
Texturising Images
|
| Total Hit (1924) |
This sample provides a simple image processing application which applies a texture to an image by modifying the lightness of the image according to the lightness of a texture image. The texture image is tiled across the surface of the processed image.
....Read More |
| Rating
|
|
|
|
Counting Colours in an Image
|
| Total Hit (1315) |
Counting the number of distinct colours in an image doesn't sound like a particularly hard thing to do until you try it on a large 24-bit image. This article demonstrates one technique for counting the colours quickly.
|
| Rating
|
|
|
|
Colourisation
|
| Total Hit (1555) |
Image colourisation is a widely-used technique in image processing which can be used to create sepia-toned effects as well as adjusting images so they can be used as watermarks and in the creation of layered background images. This article demonstrates how to use the Hue, Luminance and Saturation mo
....Read More |
| Rating
|
|
|
|
Gamma Correction
|
| Total Hit (1669) |
A Gamma Correction filter is primarily used for colour matching purposes on CRT based displays, but it can also be used for creative image processing. This article shows how the gamma filter is calculated and provides an implementation.
|
| Rating
|
|
|
|
Compositing Operations
|
| Total Hit (2067) |
There are various ways of combining two images together, particularly when either or both of the two images contain alpha channels. As the real-time video-effects industry has developed, twelve standard compositing techniques, know as the Porter-Duff Compositing Operations, have emerged. In addition
....Read More |
| Rating
|
|
|
|
Brightness and Contrast
|
| Total Hit (1668) |
This article demonstrates how to apply two of the simplest image processsing filters, brightness and contrast, to an image.
|
| Rating
|
|
|
|
Optimised Colour Reduction Using Octrees
|
| Total Hit (775) |
Describes the working of the Octree colour quantisation algorithm be used to create optimised colour palettes of arbitrary depth (although typically used for 256 colours) from any image and compares the results with other colour reduction methods.
|
| Rating
|
|
|
|
Owner Draw Combo and List Boxes Version 2.1
|
| Total Hit (1644) |
Owner draw combo and list boxes are an excellent way to improve the look and feel of your application. However, there is little support for them in Visual Basic. The only owner-draw combo box supplied is the Checked list box style, but this is a preset list box style with no possibility for customis
....Read More |
| Rating
|
|
|
|
Using ecdClientDrawOnly with the Owner Draw Combo List Box Control
|
| Total Hit (2475) |
This article demonstrates how to use the ecdClientDrawOnly mode of the vbAccelerator Owner Draw and Combo List Box control to draw completely customised Combo Boxes (note that exactly the same technique applies for List Boxes as well). The sample provides three useful implementations - a line picker
....Read More |
| Rating
|
|
|
|
Media Progress Bar Renderer
|
| Total Hit (1784) |
Windows Media Player has a neat progress bar showing how its getting on whilst burning files to CD or other long operations. This article presents a reusable class which draws a progress bar in a similar presentation. The resulting bar can be drawn to anything that exposes an hDC, and therefore can
....Read More |
| Rating
|
|
|
|
vbAccelerator Progress Bar Class
|
| Total Hit (1794) |
This article provides a class that allows you to draw progress bars onto any control, form or API created object with a hDC property. The drawing code is derived from the vbAccelerator Progress Bar control and all functionality except Image Processing and persistence of data is included.
....Read More |
| Rating
|
|
|
|
vbAccelerator Progress Bar Control
|
| Total Hit (1483) |
This control provides a highly flexible Progress Bar control with an array of drawing styles, including XP Style, segmented/non-segmented, bitmap bars and backgrounds and more. Alternatively, if you don't want the convenient packaging and design-time property settings provided by a control, you can
....Read More |
| Rating
|
|
|
|
Button ListBar Control
|
| Total Hit (1352) |
The Button ListBar control provides an emulation of the ListBar provided in the Windows Add/Remove Programs window. Under XP it uses the UxTheme API to draw parts of the toolbar, and degrades to use standard GDI drawing calls when used on earlier OS versions.
....Read More |
| Rating
|
|
|
|
vbAccelerator ListBar Control
|
| Total Hit (1614) |
The vbAccelerator ListBar control is an all-VB control which emulates the Outlook sidebar as accurately as possible. I was inspired to write it when I started playing with Microsoft's Spy++ utility and pointed it at Outlook's list bar (or "ShortcutBar" as it publicises itself to the world) and notic
....Read More |
| Rating
|
|
|
|
vbAccelerator Visual Studio Style ToolBox ListBar
|
| Total Hit (799) |
This control provides a full implementation of a Visual Studio-style List Bar which holds lists of controls. Bars and items can be dragged around the control, and items can be dragged, pressed or double-clicked to add the item to an object.
|
| Rating
|
|
|
|
vbAccelerator No Status Bar Control
|
| Total Hit (649) |
This article provides a small class which implements all of the StatusBar functionality you're likely to need in an application with none of the distribution headaches associated with a control. The latest version supports XP Style drawing and frankly looks quite great.
....Read More |
| Rating
|
|
|
|
vbAccelerator Status Bar Control
|
| Total Hit (1663) |
This article provides a full implementation of the ComCtl32 status bar control in VB, providing access to all of the features including Owner-Drawn panels.
|
| Rating
|
|
|
|
vbAccelerator ListView Control
|
| Total Hit (1735) |
This control provides an alternative to the VB ListView control and adds support for almost all of the new ComCtl32.DLL v6.0 features that are missing from the VB version: ListView grouping, Tile view with configurable sub-items, Multiple Work Areas and more.
....Read More |
| Rating
|
|
|
|
ComCtl32 Header Control
|
| Total Hit (748) |
This article provides a fully-featured Header Control directly from COMCTL32.DLL. The latest version uniquely provides support for Outlook-style drag-drop grouping of columns as well as in place column filtering.
It is a good building block for generating your own controls. Check out the S-Grid
....Read More |
| Rating
|
|
|
|
ComCtl32.DLL HotKey Control
|
| Total Hit (768) |
The hotkey control is one of the controls provided as part of COMCTL32.DLL, but, being of somewhat limited utility, has never found its way into Visual Basic's controls. If you need one, however, it does the job really well.
When it has focus, you can press CTRL, ALT and SHIFT key combinations,
....Read More |
| Rating
|
|
|
|
vbAccelerator Visual Studio Style Tab Control
|
| Total Hit (1473) |
This control reimplements the tab drawing code used in the vbAccelerator MDITabs Control as a fully-featured Visual Studio style Tab Control, with a fully-typed object interface. It also supports pinning and unpinning tabs, so when they're unpinned they show a small vertical tab-bar which slides-out
....Read More |
| Rating
|
|
|
|
vbAccelerator MDITabs Control
|
| Total Hit (2343) |
Over the years, Microsoft applications have been moving away from the old Multiple Document Interface style to a more modern look. This component, provided as a DLL, automatically converts a VB MDI application to one which looks like Visual Studio, with a tab for each window. Tabs can be scrolled an
....Read More |
| Rating
|
|
|
|
vbAccelerator TabStrip Control
|
| Total Hit (1867) |
This control provides a fully functional implementation of the ComCtl32 TabStrip control. The control implements all the latest features, including support for Owner-Draw tabs, and is entirely coded in VB
|
| Rating
|
|
|
|
vbAccelerator Icon Selector Control
|
| Total Hit (2533) |
This control provides a simple to use icon selector, and works in the exactly the same way as the Change Icon dialog in Windows. You can either use it to select existing icons, or you can add your own.
|
| Rating
|
|
|
|
vbAccelerator Icon Editor Control
|
| Total Hit (889) |
The vbAccelerator Icon Editor control is an all-VB control which allows Icon Editing facilities, with the aim of providing a similar level of facilities to the Icon Editor provided in Visual Studio. The control builds upon the cFileIcon Class to allow writing as well as reading icons, and adds full
....Read More |
| Rating
|
|
|
|
vbAccelerator Scroll Buttons Control
|
| Total Hit (1290) |
This control provides an implementation of an API scroll bar control which can be extended to display completely configurable buttons at either end of the scroll bar. This way you can add extra functionality like the VB code editor's Procedure/Full Module view buttons or zoom in and out buttons like
....Read More |
| Rating
|
|
|
|
vbAccelerator Drop-Down and Popup Form Control
|
| Total Hit (1767) |
This control allows you to use any form as a drop-down window, and optionally to drag the form off and float it over the form. The form behaves just like the drop-down windows in Office, albeit you cannot currently dock them (yet!) The code includes a VB titlebar modifier class which ensures that an
....Read More |
| Rating
|
|
|
|
Creating drop-down tool windows
|
| Total Hit (1936) |
One feature I've been trying to achieve since I first discovered you could write API declares in VB3 (oops, showing my age here...) is a drop-down tool window you can show in response to a button or tool bar button click. These windows have been increasing in number in the Office series of tools and
....Read More |
| Rating
|
|