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FillFromDirectory works MIO.LoadFromFiles fails ..

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T O P I C R E V I E W
Greg Lumley	Posted - May 30 2012 : 14:13:41 First of all please bear with me, I'm very very new to Delphi! I'm building an app whereby users can select images, it's all going well but now I want them to be able to filter only the selected images from the database, so building a string I'm using the ImageEnMView.MIO.LoadFromFiles method which does load the files successfully to the thumbgrid but now, ImageEnMView1.ImageFileName[0] no longer returns the filename which I'm using as a unique key in an sqlite db... of course all this causes the SQL statement to fail... like I said please bear with me I'm still figuring this all out... //ImageEnMView1.FillFromDirectory(DirectoryListBox1.Directory); //All working perfectly with this line. ImageEnMView1.MIO.LoadFromFiles('dacl_f_00053.jpg\|dacl_f_00057.jpg\|dacl_f_00058.jpg\|dacl_f_00059.jpg');//No longer returns the file name with this line... Thank you for your assistance ;-) Greg.
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Greg Lumley	Posted - May 31 2012 : 08:44:26 Fabrizio, I just re-read your original post... it was a case of paying attention on my part, it's very very clear! I feel like a bit of an idiot here... thanks for helping me anyway! G Greg.
Greg Lumley	Posted - May 31 2012 : 08:41:32 Hi Fabrizio, I'm not going to lie... I'm hacking here! I'm from a self taught PHP background, I stopped 7 years ago and I'm now a professional photographer (I'm far better at that!) when I coded for a living I tried to teach myself good habits not always managing... you might as well have spoken Japanese there for a moment.. it went over my head ;-) Thank you for code it works perfectly and I'll probably be able to convert that Japanese to English as a result! Your help is much appreciated! Greg. Greg.
fab	Posted - May 31 2012 : 02:04:13 ... ImageEnMView1.MIO.LoadFromFiles('dacl_f_00058.jpg\|dacl_f_00059.jpg');//A test string before dynamically generating from db. ImageEnMView1.SelectedImage := 0; ShowMessage(ImageEnMView1.ImageFileName[0]);// <-- it's now empty, "loadfromdirectory" autopopulates it but not LoadFromFile yes, but this is exactly what I explained you. LoadFromFile doesn't populate ImageFileName[]! If you have an array of filenames and you want to load them without LoadFromFiles, just write: ImageEnMView1.Clear(); ImageEnMView1.ImageFileName[ ImageEnMView1.AppendImage() ] := 'dacl_f_00058.jpg'; ImageEnMView1.ImageFileName[ ImageEnMView1.AppendImage() ] := 'dacl_f_00059.jpg'; etc...
Greg Lumley	Posted - May 31 2012 : 01:03:36 Hi Fabrizio, thank you for your answer... but I'm still hazy. Perhaps if I show you my code (modified from the EnImageExamples) ImageEnMView1.Clear; ImageEnMView1.FillFromDirectory(DirectoryListBox1.Directory); ImageEnMView1.SelectedImage := 0; ShowMessage(ImageEnMView1.ImageFileName[0]);//This displays the file name ImageEnView1.io.LoadFromFile(ImageEnMView1.ImageFileName[0]); //Load the main image variable as well as the label pub_currentimagename := ExtractFileName(ImageEnMview1.ImageFileName[0]) ; self.lbl_currentimage.Caption := pub_currentImageName; Further on in the code if a user selects an image its entered as a new row in the sqlite db... My next step is to allow the user to see what he/she has selected so far so instead of loading the directory I'd like to load only the selection from the database as a string... Below is what I tried when it failed... ImageEnMView1.Clear; ImageEnMView1.MIO.LoadFromFiles('dacl_f_00058.jpg\|dacl_f_00059.jpg');//A test string before dynamically generating from db. ImageEnMView1.SelectedImage := 0; ShowMessage(ImageEnMView1.ImageFileName[0]);// <-- it's now empty, "loadfromdirectory" autopopulates it but not LoadFromFile ImageEnView1.io.LoadFromFile(ImageEnMView1.ImageFileName[0]); pub_currentimagename := ExtractFileName(ImageEnMview1.ImageFileName[0]) ; self.lbl_currentimage.Caption := pub_currentImageName; What would you do to fix it? Thank you! Greg. Greg.
fab	Posted - May 30 2012 : 22:57:44 They are two very different ways to present images in TImageEnMView. Setting ImageFileName[] tells TImageEnMView to load the image only when it is actually necessary. It is not an informative tag. For example FillFromDirectory just fills ImageFileName[] with the file names to load (when necessary). Instead TImageEnMView.MIO.LoadFromFile (and other TImageEnMView.MIO... methods ) actually loads one o more images immediately. It doesn't populate ImageFileName[], because images are loaded, even they aren't displayed.