private void robertsToolStripMenuItem_Click(object sender, EventArgs e) { if (img == null) // protege de executar a função sem ainda ter aberto a imagem { return; } Cursor = Cursors.WaitCursor; // cursor relogio //copy Undo Image imgUndo = img.Copy(); ImageClass.Roberts(img); ImageViewer.Refresh(); // atualiza imagem no ecrã Cursor = Cursors.Default; // cursor normal }
private void robertsToolStripMenuItem_Click(object sender, EventArgs e) { if (img == null) // verify if the image is already opened { return; } Cursor = Cursors.WaitCursor; // clock cursor //copy Undo Image imgUndo = img.Copy(); ImageClass.Roberts(img, img.Copy()); ImageViewer.Image = img.Bitmap; ImageViewer.Refresh(); // refresh image on the screen Cursor = Cursors.Default; // normal cursor }