flicker

问题 I have a Win32 GUI program with a tab control, each tab having a list view control. There is massive flickering whenever the window is resized. I've tried the following things: Handling WM_ERASEBKGND in the main wndproc and returning TRUE. No effect. Filtering out all WM_ERASEBKGND messages in the event loop. No effect. Setting the WM_CLIPCHILDREN style on the main window. Now when the window is resized the list view control is simply erased to a white background and doesn't redraw. Using

问题 This is my code. It experimentally generates various shades of colors. It is then set onto a loop that displays it in a framerate of 60fps, as for example a video game would be expected to. #include <windows.h> #include <stdint.h> int main() { HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE); COORD start = {0, 0}; DWORD b = 0; char shades[2000]; for (int i=0; i<2000; i+=80){ for (int k=0; k<16; k++){ shades[i+k]=32; } for (int k=16; k<32; k++){ shades[i+k]=176; } for (int k=32; k<48; k++){

问题 This is my code. It experimentally generates various shades of colors. It is then set onto a loop that displays it in a framerate of 60fps, as for example a video game would be expected to. #include <windows.h> #include <stdint.h> int main() { HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE); COORD start = {0, 0}; DWORD b = 0; char shades[2000]; for (int i=0; i<2000; i+=80){ for (int k=0; k<16; k++){ shades[i+k]=32; } for (int k=16; k<32; k++){ shades[i+k]=176; } for (int k=32; k<48; k++){

问题 I have return ed 1L from WM_ERASEBKGND handler, have handled WM_SIZE by adding InvalidateRect( hWnd, NULL, FALSE ); and have removed CS_HREDRAW | CS_VREDRAW style from my window class. Flickering is most visible on the tab control. Here is a small demo that illustrates the problem: 1.) Create empty C++ project in Visual Studio . 2.) Create header pomocne_funkcije.h and copy/paste the following: #include <windows.h> #include <windowsx.h> #include <comutil.h> #include <commctrl.h> #include

问题 I have return ed 1L from WM_ERASEBKGND handler, have handled WM_SIZE by adding InvalidateRect( hWnd, NULL, FALSE ); and have removed CS_HREDRAW | CS_VREDRAW style from my window class. Flickering is most visible on the tab control. Here is a small demo that illustrates the problem: 1.) Create empty C++ project in Visual Studio . 2.) Create header pomocne_funkcije.h and copy/paste the following: #include <windows.h> #include <windowsx.h> #include <comutil.h> #include <commctrl.h> #include

问题 I'm clearing and adding multiple LinkLabel's to FlowLayoutPanel, every couple of seconds. It works fine, but flicker is quite noticeable. Is there any way to reduce it? I tried to set Form.DoubleBuffering, it didn't help. 回答1: Managed by creating a custom control derived from FlowLayoutPanel and setting its styles as shown below: Public Class CustomFlowLayoutPanel Inherits FlowLayoutPanel Public Sub New() MyBase.New() SetStyle(ControlStyles.UserPaint, True) SetStyle(ControlStyles

问题 I'm facing this popular issue with Chrome, where I apply a filter:blur(8px) to an image hover and it flickers when the hover effect is on/off, the image flickers. Before posting I did search and try options like adding: -webkit-backface-visibility: hidden; or: -webkit-transform: translate3d(0, 0, 0); -webkit-transform-style: preserve-3d; -webkit-transform: translateZ(0); -webkit-perspective: 1000; But none of those worked for me. It's important to notice that it happens on first load, or when

问题 I'm facing this popular issue with Chrome, where I apply a filter:blur(8px) to an image hover and it flickers when the hover effect is on/off, the image flickers. Before posting I did search and try options like adding: -webkit-backface-visibility: hidden; or: -webkit-transform: translate3d(0, 0, 0); -webkit-transform-style: preserve-3d; -webkit-transform: translateZ(0); -webkit-perspective: 1000; But none of those worked for me. It's important to notice that it happens on first load, or when

问题 Can anybody explain the difference and relationship between SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | ControlStyles.DoubleBuffer, true) and protected override CreateParams CreateParams { get { CreateParams cp = base.CreateParams; cp.ExStyle |= 0x02000000; // Turn on WS_EX_COMPOSITED return cp; } } They are required to reduce flickers, but when and how to use them correctly? Can they be used individually, or must be used in pairs, and what's the reason for that?

问题 When resizing a form with many controls, the form looks bad because of flickering. What are some tips to have a smoother form resizing? 回答1: procedure TForm1.WMEnterSizeMove(var Message:TWMMove); begin Self.DisableAlign; end; procedure TForm1.WMExitSizeMove(var Message:TWMMove); begin Self.EnableAlign; end; 回答2: Try using WM_SETREDRAW (not LockWindowUpdate). You might also have a look at DeferWindowPos. 回答3: Complex forms are often made up of nested panels, and the repaint process may cause