imagelist

问题 I am working on Winforms where I am saving path of image in database, and then retrieving the path and giving it to Imagelist. The images from Image list are used in ImageView. But the image is not displaying, its path is correctly displayed but image is not showing. public void yourvideos(string user, ImageList imageList, ListView lv, Label l,TextBox s) { cmd = new SqlCommand("select Title,Thumbnail from RecipeInfo where Username=@username", con); cmd.Parameters.AddWithValue("@username",

问题 I am trying to load about 60 pictures in a list. Each picture is about 1MB. For 20 pictures no problem but above that I get Out of memory exception on the code line below. I have searched vastly of related issues, some stating about "using" key word and stream but since I am a beginner can someone please help me. Image image = Bitmap.FromFile(Filename); Here is my code private void LoadBtn_Click_1(object sender, EventArgs e) { OpenFileDialog newDialog = new OpenFileDialog(); if (newDialog

问题 I am using an ImageList in C# to display images on buttons dynamically. When I set the image index, it displays the image like so: Here is the same image in Photoshop: 回答1: To anyone else who has this problem, Open all the images in an image editor and replace transparency with something like (255, 0, 255) and in Visual Studio set "Transparency Color" to (255, 0, 255). 回答2: I had same problem using image with transparent background. Setting appropriate color depth solved the issue. imageList

问题 I have a table contains Image in a Picture field and I am going to put them into an ImageList. Here is the code: ImageList.Clear; ItemsDts.First; ImageBitmap:= TBitmap.Create; try while not ItemsDts.Eof do begin if not ItemsDtsPicture.IsNull then begin ItemsDtsPicture.SaveToFile(TempFileBitmap); ImageBitmap.LoadFromFile(TempFileBitmap); ImageList.Add(ImageBitmap, nil); end; ItemsDts.Next; end; finally ImageBitmap.Free; end; But I have some problem for images with difference size from

问题 I am using C#'s inbuilt drag and drop via Control.DoDragDrop(). I use an Image List and ImageList_DragMove and friends to move a semi-transparent image around, tracking with the mouse. (See my reply in this thread for more information). How can I make the ImageList track the mouse when it is outside my windows? I only receive mouse position messages in OnDragOver(), and only when the mouse is over one of my Windows. The drag is going to another instance of my application, and I would like the

问题 I'm trying to dynamically change a ListView in my program. Every item has an ImageKey and I use a SmallImageList for them. The problem is whenever I delete an item, the problem which was mentioned in this question appears: Before and after deleting an item: Code used: // Add the images from an array of paths foreach (string xFile in files) { thumbnails_imageList.Images.Add(xFile, images[xFile]); files_lst.Items.Add(xFile, Path.GetFileNameWithoutExtension(xFile), xFile); } // Delete the

问题 There are several other questions that are very similar to this that I have come across: Is it possible to create a CImageList with alpha blending transparency? Transparent images in ImageLists for ListViews ImageList Transparency on Listviews? I am using WTL9.0. I have a frame window with a CTreeViewCtrlEx as its child. I am using SHGetFileInfo() to obtain the icons I want to use in the tree, but they show up with black backgrounds. Here is a complete sample. #define WINVER 0x0601 // Windows

问题 i need a way to use two imagelist on a listview. one of the image list if for header icons which contain 16x16 icons, and another will contains 32x32 thumbnail pictures within the sub items. The image below shows what am trying to do 回答1: i found a trick which solves the issue. the trick is to create a 16x16 icon on a 32x32 canvas and center it. this is because the thumbnail size is 32bit max. so i have one image list for 16pix isonc and another for 32pix icons when thumbnail is needed, i

问题 My intention is to create a toolbar in Win32 containing a transparent icon. I have tried the following code to create a simple toolbar with one button having a custom image: // Create the toolbar HWND hToolbar = CreateWindow(TOOLBARCLASSNAME, NULL, WS_CHILD | TBSTYLE_FLAT | TBSTYLE_AUTOSIZE | TBSTYLE_LIST | CCS_BOTTOM, 0, 0, 0, 0, hwnd, NULL, ghInstance, // <-this is the HINSTANCE of the application NULL); // Set the font (this cannot be the problem) SendMessage(hToolbar, WM_SETFONT, (WPARAM

问题 When I Set Some images of products in Imagelist and I set that Imagelist as LargeImageList of ListView for display of images. At that time all are blur in ListView. I don't what is exactly happed with this images. All images quality are good. Even I set image without ListView then Quality is maintain with same image. Here is the Image layout of my form and you can see images quality are degraded. Click here for see image foreach (var item in Data) { { il.Images.Add("test1", image);