panel

问题 When I set the Label 's color e.g. on value clRed , the red on it only blink for a while. The color property still has clRed value, but in fact it has default clBtnFace color. Screenshot discribes the problem better. 回答1: Set Transparent to False. :-) Edit: assuming it's a TLabel, as shown in the screenshot. 回答2: Do you mean a TLabel or a TPanel ? Your screenshot shows a label, but it should work for both components. Make sure that the ParentColor property is set to false . 来源： https:/

问题 I need to handle panel collapse behavior without using ID or data attributes. Ideally by setting a "collapsible" class on the parent div that can collapse its content, and a click on the heading should trigger the collapse Here's the target HTML I'd like to write to handle collapse behavior automatically <div class="panel-group collapse-all-but-one"> <div class="panel panel-primary panel-collapsible> <div class="panel-heading">Click me to collapse</div> <div class="panel-body">I will

问题 This is about wxPython. I would like to have 2 Panels laying one over the other: PanelBG should be some sort of a "background", with its own GridBagSizer with subPanels, StaticTexts and so on; PanelFG should be the "foreground" panel, also with its own GridBagSizer with some StaticTexts, Buttons... but a transparent background, in such a way that PanelBG is visible wherever PanelFG doesn't lay widgets. I need both Panels to stretch to all the sides of the frame, even when resizing the window,

问题 I am trying to create widgets in Shiny by using for loop. each block contains: label check box choices selector Two numeric inputs I want to do condition for showing or hiding the two numeric inputs according to the value of the check box and the value of the choices selector. In the for loop that I created I added an index for each widget variable. I am wondering how can I execute the condition of the conditional panel in the for loop knowing that the variables are indexed in their names.

问题 I want to prevent scrolling with the mousewheel in a panel with a scrollbar, how can ido this? I have seen this suggested, but it's not working: panel.MouseWheel += new MouseEventHandler(MouseWheel); void MouseWheel(object sender, MouseEventArgs e) { ((HandledMouseEventArgs)e).Handled = true; } 回答1: Try inheriting your own Panel and just comment out the OnMouseWheel call: public class WheelessPanel : Panel { protected override void OnMouseWheel(MouseEventArgs e) { // base.OnMouseWheel(e); } }

问题 I want to prevent scrolling with the mousewheel in a panel with a scrollbar, how can ido this? I have seen this suggested, but it's not working: panel.MouseWheel += new MouseEventHandler(MouseWheel); void MouseWheel(object sender, MouseEventArgs e) { ((HandledMouseEventArgs)e).Handled = true; } 回答1: Try inheriting your own Panel and just comment out the OnMouseWheel call: public class WheelessPanel : Panel { protected override void OnMouseWheel(MouseEventArgs e) { // base.OnMouseWheel(e); } }

问题 I want to prevent scrolling with the mousewheel in a panel with a scrollbar, how can ido this? I have seen this suggested, but it's not working: panel.MouseWheel += new MouseEventHandler(MouseWheel); void MouseWheel(object sender, MouseEventArgs e) { ((HandledMouseEventArgs)e).Handled = true; } 回答1: Try inheriting your own Panel and just comment out the OnMouseWheel call: public class WheelessPanel : Panel { protected override void OnMouseWheel(MouseEventArgs e) { // base.OnMouseWheel(e); } }

问题 I want to prevent scrolling with the mousewheel in a panel with a scrollbar, how can ido this? I have seen this suggested, but it's not working: panel.MouseWheel += new MouseEventHandler(MouseWheel); void MouseWheel(object sender, MouseEventArgs e) { ((HandledMouseEventArgs)e).Handled = true; } 回答1: Try inheriting your own Panel and just comment out the OnMouseWheel call: public class WheelessPanel : Panel { protected override void OnMouseWheel(MouseEventArgs e) { // base.OnMouseWheel(e); } }

问题 I would like to reset a panel to its initial state. For e.g., I set an image as background, I drew graphics on a part of the panel. I have to clear everything. How? 回答1: You have to clear the panel first panel1.Controls.Clear(); then call the initial form. panel1.Controls.Add(orig_form); 回答2: Use the following code to delete all graphics from the panel panel1.Invalidate(); If there is something you need to add to panel's initial state then after you call invalidate you again have to set those

问题 I would like to reset a panel to its initial state. For e.g., I set an image as background, I drew graphics on a part of the panel. I have to clear everything. How? 回答1: You have to clear the panel first panel1.Controls.Clear(); then call the initial form. panel1.Controls.Add(orig_form); 回答2: Use the following code to delete all graphics from the panel panel1.Invalidate(); If there is something you need to add to panel's initial state then after you call invalidate you again have to set those