c++ - 尽管应用了已知的抗闪烁技术，但我的应用程序在调整大小时略微闪烁

Question

我从 WM_ERASEBKGND 处理程序返回ed 1L，通过添加 InvalidateRect( hWnd, NULL, FALSE ); 并删除了 CS_HREDRAW |来 self 的窗口类的 CS_VREDRAW 样式。

选项卡控件上的闪烁最为明显。这是一个说明问题的小演示:

1.) 在 Visual Studio 中创建空的 C++ 项目。

2.) 创建 header pomocne_funkcije.h 并复制/粘贴以下内容:

#include <windows.h>
#include <windowsx.h>
#include <comutil.h>
#include <commctrl.h>
#include <stdio.h>
#include <vector>
#include <ole2.h>
#include <string>
#include <stdlib.h>
#include <locale.h>
#include <Uxtheme.h>

#pragma comment( linker, "/manifestdependency:\"type='win32' \
name='Microsoft.Windows.Common-Controls' version='6.0.0.0' \
processorArchitecture='*' publicKeyToken='6595b64144ccf1df' \
language='*'\"")

#pragma comment( lib, "comctl32.lib")
#pragma comment( lib,"Msimg32.lib")
#pragma comment( lib, "comsuppw.lib")
#pragma comment( lib, "UxTheme.lib")

3.) 创建名为 main.cpp 的 .cpp 文件并复制/粘贴以下内容:

#include "pomocne_funkcije.h"

static HINSTANCE hInst;

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
    case WM_CREATE:
        {
            RECT rcClient = {0};
            ::GetClientRect( hwnd, &rcClient );

            HWND hwndTab = CreateWindowEx( 0, WC_TABCONTROL, 
                L"Ugovori", WS_CHILD | WS_VISIBLE, 
                10, 10, rcClient.right - rcClient.left - 20,
                rcClient.bottom - rcClient.top - 63, 
                hwnd, (HMENU)3000, 
                ((LPCREATESTRUCT)lParam)->hInstance, 0 );

            TCITEM tci = {0};

            tci.mask = TCIF_TEXT;
            tci.pszText = L"Основни подаци";
            TabCtrl_InsertItem( hwndTab, 0, &tci );

            tci.pszText = L"Анекси";
            TabCtrl_InsertItem( hwndTab, 1, &tci );

            tci.pszText = L"Подиѕвођачки радови";
            TabCtrl_InsertItem( hwndTab, 2, &tci );

            SendMessage( hwnd, WM_SETFONT, 
                (WPARAM)(HFONT)GetStockObject(DEFAULT_GUI_FONT),
                (LPARAM)TRUE );

            SendMessage( hwndTab, WM_SETFONT, 
                (WPARAM)(HFONT)GetStockObject(DEFAULT_GUI_FONT),
                (LPARAM)TRUE );

        }
        return 0L;
    case WM_MOVE:
    case WM_MOVING:
    case WM_SIZING:
    case WM_SIZE:
        {
            RECT rcClient = {0};
            GetClientRect( hwnd, &rcClient );

            SetWindowPos( GetDlgItem( hwnd, 3000 ), NULL, 
                rcClient.left + 10, rcClient.top + 10, 
                rcClient.right - rcClient.left - 20, 
                rcClient.bottom - rcClient.top - 63,
                SWP_NOZORDER | SWP_NOCOPYBITS );

            InvalidateRect( hwnd, NULL, FALSE );
        }
        return 0L;
    case WM_ERASEBKGND:
        return 1L;
    case WM_PAINT:
        {
            PAINTSTRUCT ps = {0};
            HDC hdc = BeginPaint( hwnd, &ps );
            SendMessage( hwnd, WM_PRINTCLIENT, (WPARAM)hdc, 0 );
            EndPaint( hwnd, &ps );
        }
        return 0L;
    case WM_PRINTCLIENT:
        {
            RECT rcClient = {0};
            GetClientRect( hwnd, &rcClient );

            FillRect( (HDC)wParam, &rcClient, 
                (HBRUSH)GetStockObject(WHITE_BRUSH) );
        }
        return 0L;
    case WM_CLOSE:
        ::DestroyWindow(hwnd);
        return 0L;
    case WM_DESTROY:
        ::PostQuitMessage(0);
        return 0L;
    default:
        return ::DefWindowProc( hwnd, msg, wParam, lParam );
    }
    return 0;
}

// WinMain

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, 
                   int nCmdShow)
{
    // store hInstance in global variable for later use

    hInst = hInstance;

    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;

    // initialize common controls

    INITCOMMONCONTROLSEX iccex;
    iccex.dwSize = sizeof(INITCOMMONCONTROLSEX);
    iccex.dwICC = ICC_LISTVIEW_CLASSES | ICC_UPDOWN_CLASS | 
       ICC_STANDARD_CLASSES | ICC_TAB_CLASSES;
    InitCommonControlsEx(&iccex);

    // register main window class

    wc.cbSize = sizeof(WNDCLASSEX);
    wc.style = 0;
    wc.lpfnWndProc = WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInst;
    wc.hIcon = LoadIcon( hInstance, IDI_APPLICATION );
    wc.hCursor = LoadCursor( NULL, IDC_ARROW );
    wc.hbrBackground = (HBRUSH)GetStockObject( WHITE_BRUSH );
    wc.lpszMenuName = NULL;
    wc.lpszClassName = L"Main_Window";
    wc.hIconSm = LoadIcon( hInstance, IDI_APPLICATION );

    if(!RegisterClassEx(&wc))
    {
        MessageBox(NULL, 
            L"Window Registration Failed!", L"Error!", 
            MB_ICONEXCLAMATION | MB_OK);

        return 0;
    }

    // create main window

    hwnd = CreateWindowEx( 0, L"Main_Window", 
        L"Contract manager", 
        WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN, 
        CW_USEDEFAULT, 
        CW_USEDEFAULT, 
        CW_USEDEFAULT, 
        CW_USEDEFAULT, 
        NULL, NULL, hInstance, 0 );

    if(hwnd == NULL)
    {
        MessageBox(NULL, L"Nemogu da napravim prozor!", L"Greska!",
            MB_ICONEXCLAMATION | MB_OK);

        return 0; 
    }

    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);

    while(GetMessage(&Msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }

    return Msg.wParam;
}

我在 Windows XP 上使用 C++ 和 WinAPI 在 Visual Studio 2008 中工作。

问题:

如何消除选项卡控件(以及窗口的其余部分)的闪烁？

谢谢。最好的祝福。

Answer 1

我认为你不需要这条线:

InvalidateRect( hwnd, NULL, FALSE );

因为当你调整表单大小时已经有一个强制重绘。我删除了它，窗口仍然显示并重新绘制，没有闪烁。