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I got the actual ID for this control by perusing the workbook containing Excel Ribbon control IDs I downloaded from the Microsoft site mentioned earlier. At this point, save and run the add-in to verify the behavior.
In addition, the code specifies the number of rows and columns to be displayed within the gallery. For example, it calls the GetItemWidth method when it needs to determine the width of an item. In addition, the markup specifies a button to be displayed at the bottom of the gallery. You can have as many of these buttons as you like, but this example requires only one. To do this, open Ribbon1. You can, instead, supply static values for each of the various gallery control properties.
That is, rather than specifying the getItemHeight attribute in the markup, you can instead supply the itemHeight attribute along with a fixed value.
This example uses code for each of these properties, so you can dynamically vary the layout of the gallery. Make sure you insert this and the remainder of the code in the Ribbon1 class, not in the ThisAddIn partial class.
In the Ribbon1. This procedure matches the required signature for this particular callback. To find the signature for this and all the other callback procedures, refer to the documentation in the third article of the three-part set mentioned earlier. Using a design pattern like this, you can create a single GetEnabled callback procedure that can work with any Ribbon control that shares the same callback procedure signature.
In this case, the procedure simply returns True, indicating that the gallery should be enabled. The getItemCount callback allows you to calculate the number of items to display in the gallery, and you must specify this callback procedure for each gallery that you create, if you want to specify the number of items to be displayed.
In your add-in, insert the following procedure in the Ribbon1 class:. As before, this callback receives a reference to the control that triggered it and returns a scalar value indicating the number of items to be displayed in the gallery. Your code specifies the height and width of each item in the gallery. Each item must be the same size, and the Bitmap instance you created earlier controls that size.
Therefore, add the callback procedures in Figure 6 to the Ribbon1 class to return the correct dimensions to Excel. Although you could easily load images from disk or from a resource file for each of the gallery items, this example simply needs blocks of color. The GetItemImage callback procedure thus needs to draw a solid block of the appropriate color for each gallery item.
The GetItemImage callback procedure receives not only a reference to the control that triggered the callback, but also an index, indicating which image it should return. Insert the callback procedure shown in Figure 7 into the Ribbon1 class.
The GetItemImage procedure creates a Graphics object from the Bitmap you created earlier and creates a new solid brush using the supplied value to index into the array of colors. The code draws a gray rectangle a little smaller than the bitmap, and then fills the rectangle with the appropriate color. As you hover the mouse over each of the images, Excel should display the name of the color.
The GetItemScreenTip callback procedure requests the text to be displayed for each image, and your job is to simply return the name for each color. VLC Media Player. MacX YouTube Downloader. Microsoft Office YTD Video Downloader. Adobe Photoshop CC. VirtualDJ Avast Free Security. WhatsApp Messenger. Talking Tom Cat. Quickly teach yourself how to automate tasks and create custom spreadsheet solutions with Excel Visual Basic for Applications VBA. With Step By Step, you set the pace—building and practicing the skills you need, just when you need them!
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