Question

我正在制作一个必须无边界的控制台应用程序;为了实现这一点，我已经改变了控制台窗口样式和窗口区域，如下所示在某些时候，我遇到一个问题，使得控制台窗口通常大小约为2x1个字符，或者有时完全错误（不可见的客户区域，某些部分为白色，某些部分透明，随机边框等）有人告诉我，将ShowWindow(hWnd, SW_HIDE);添加到它现在所在的行可以解决问题。它确实。
现在我想弄清楚为什么问题首先存在，如果还有其他方法可以阻止它？

我被告知问题可能发生，因为Windows试图在我的程序的同时访问窗口属性（位置，样式，大小等）。不过，我不知道这是否属实。

#include <Windows.h>
#include <iostream>
int main()
{
    HANDLE hCon = GetStdHandle(STD_OUTPUT_HANDLE);

    SMALL_RECT srWnd = {0, 0, 1, 1};
    SetConsoleWindowInfo(hCon, 1, &srWnd);
    COORD cBuffSize = {81, 26};
    SetConsoleScreenBufferSize(hCon, cBuffSize);
    srWnd.Top = 0;
    srWnd.Right = 80;
    srWnd.Bottom = 25;
    srWnd.Left = 0;
    SetConsoleWindowInfo(hCon, 1, &srWnd);

    // When the next two lines are moved so that they are the first two lines inside main(), the window gets bugged.
    HWND hWnd = GetConsoleWindow();
    ShowWindow(hWnd, SW_HIDE); // Or if you just remove this line

    RECT rClnt;
    GetClientRect(hWnd, &rClnt);

    SetWindowLong(hWnd, GWL_STYLE, WS_POPUP);
    LONG exStyle = GetWindowLong(hWnd, GWL_EXSTYLE);
    exStyle &= ~(WS_EX_CLIENTEDGE | WS_EX_APPWINDOW);
    SetWindowLongPtr(hWnd, GWL_EXSTYLE, exStyle | WS_EX_TOOLWINDOW);

    rClnt.right += 1;
    HRGN rgnClnt = CreateRectRgnIndirect(&rClnt);
    SetWindowRgn(hWnd, rgnClnt, 1);

    RECT rScrn;
    GetWindowRect(GetDesktopWindow(), &rScrn);
    SetWindowPos(hWnd, HWND_TOPMOST, rScrn.right / 2 - rClnt.right / 2, rScrn.bottom / 2 - rClnt.bottom / 2, 0, 0, SWP_NOSIZE | SWP_FRAMECHANGED);

    ShowWindow(hWnd, SW_SHOW);

    std::cin.get();
    return 0;
}

Answer 1

以下是Windows 8的工作示例。但是每次移动/调整/恢复控制台时都需要刷新窗口区域。

#include <windows.h>
#include <tchar.h>
#include <conio.h>
#include <dwmapi.h>

//#pragma comment(lib, "uxtheme.lib")
#pragma comment(lib, "dwmapi.lib")

int _tmain(int argc, _TCHAR* argv[])
{
    HWND hWnd = GetConsoleWindow();
    DWMNCRENDERINGPOLICY policy = DWMNCRP_DISABLED;
    DwmSetWindowAttribute(hWnd, DWMWA_NCRENDERING_POLICY, &policy, sizeof(DWMNCRENDERINGPOLICY));
    //SetThemeAppProperties(0);
    //SetWindowThemeNonClientAttributes(hWnd, STAP_VALIDBITS, 0);
    //SetWindowPos(hWnd, NULL, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_FRAMECHANGED);
    //RedrawWindow(hWnd, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
    RECT rClnt, rWnd;
    GetClientRect(hWnd, &rClnt);
    GetWindowRect(hWnd, &rWnd);
    POINT pt = {0,0};
    MapWindowPoints(hWnd, NULL, &pt, 1);
    OffsetRect(&rClnt, pt.x-rWnd.left, pt.y-rWnd.top);
    HRGN rgnClnt = CreateRectRgnIndirect(&rClnt);
    SetWindowRgn(hWnd, rgnClnt, 1);

    _getch();
    return 0;
}

如果我太早得到窗口句柄，控制台窗口会被窃听？

1 个答案: