0

我有两扇窗户，一扇较小，另一扇较大。首先创建的窗口将始终位于顶部。BringWindowToTop(hWnd)不做也不做SetWindowPos(hWnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);！我也一直在尝试HWND_TOPMOST和HWND_BOTTOM。

似乎使一个窗口在另一个窗口之上的唯一方法是正确的创建顺序。但这不是我需要的，我需要即时更改订单。有谁知道这可能是什么原因？这些只是旧的普通CreateWindow()实例，它们都有相同的父级。互联网上的任何搜索都不会产生任何结果。需要一些专家的帮助！

#include <windows.h>

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);

HWND make_child(HWND Parent, int x, int y, int color) {
    HINSTANCE hInstance = 0;
    MSG msg          = {0};
    WNDCLASS wc      = {0}; 
    wc.lpfnWndProc   = WndProc;
    wc.hInstance     = hInstance;
    wc.hbrBackground = CreateSolidBrush(color);//(HBRUSH)(COLOR_WINDOWFRAME);
    wc.lpszClassName = (LPCSTR)L"mychildwin";
    RegisterClass(&wc);
    return CreateWindow("edit",(LPCSTR)"child", WS_BORDER|WS_CHILD|WS_VISIBLE, x,y,100,100,Parent,0,hInstance,NULL);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){
    MSG msg          = {0};
    WNDCLASS wc      = {0}; 
    wc.lpfnWndProc   = WndProc;
    wc.hInstance     = hInstance;
    wc.hbrBackground = CreateSolidBrush(0xff8080);
    wc.lpszClassName = (LPCSTR)L"minwindowsapp";
    if (!RegisterClass(&wc))  return 1;
    HWND W = CreateWindow(wc.lpszClassName,(LPCSTR)L"Minimal Windows Application", WS_OVERLAPPEDWINDOW|WS_VISIBLE, 0,0,640,480,0,0,hInstance,NULL);
    HWND A = make_child(W, 10, 10, 0x88ff00);
    HWND B = make_child(W, 70, 70, 0x8888ff);
    BringWindowToTop(B);
    SetWindowPos(B, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);

    //REAL PROBLEM WAS HERE: A second call to SetWindowPos
     SetWindowPos(handle, 0, 0, 0, new_width, new_height,
      SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOACTIVATE);
    // adding SWP_NOZORDER fixed it..

    while(GetMessage(&msg, NULL, 0, 0) > 0) DispatchMessage(&msg);
    return 0;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
    switch(message) {
        case WM_CLOSE: PostQuitMessage(0); break;
        default: return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}
4

2 回答 2

2

根据MSDN文档，还可以将窗口句柄传递给您希望在之后插入窗口的窗口。

BOOL WINAPI SetWindowPos(
  _In_      HWND hWnd,
  _In_opt_  HWND hWndInsertAfter,
  _In_      int X,
  _In_      int Y,
  _In_      int cx,
  _In_      int cy,
  _In_      UINT uFlags
);

窗口的句柄在哪里hWndInsertAfter，您的窗口应位于AFTER 之后。你试过这个吗？

于 2013-03-25T08:11:09.733 回答
1

好吧，也许有人会发现它真的很有用。因为真正的问题是，SetWindowPos两者BringWindowToTo都运行良好，但后来在我的真实应用程序中，我SetWindowPos再次调用以稍微移动组件，它再次搞砸了ZOrder！

所以我SWP_NOZORDER在第二次调用中添加了SetWindowPos.

于 2013-03-25T09:15:05.833 回答