windows 使用 SetWindowPos 移动窗口是“正常方式”吗？
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Is moving a window with SetWindowPos the 'normal way' to do?
提问by René Nyffenegger
I am wondering if, in order to move a (ms-windows-)window with the Win32 API 20 px to the right and 40 px downwards, the following function call would be how to do it:
我想知道，为了将带有 Win32 API 的 (ms-windows-) 窗口向右移动 20 像素，向下移动 40 像素，以下函数调用是如何执行的：
SetWindowPos(
/* hWnd */ hChildDlg2,
/* hWndInsertAfter */ (HWND) -1,
/* X */ 20,
/* Y */ 40,
/* cx */ -1,
/* cy */ -1,
/* uFlags */ SWP_NOSIZE | // Ignore cx, cy
SWP_NOZORDER // and hWndInsertAfter
);
I ask because it seems to me that there could be a function only taking a HWNDand an xand yas parameters.
我问是因为在我看来可能有一个函数只接受 aHWND和 an xandy作为参数。
采纳答案by Anders
Yes, this is the normal way and the window will get a WM_WINDOWPOSCHANGINGmessage (with the parameters that changed) There is also the older MoveWindowbut it is less flexible and actually forces you to set the size.
是的，这是正常方式，窗口会收到一条WM_WINDOWPOSCHANGING消息（参数已更改）还有较旧的方式，MoveWindow但灵活性较差，实际上会强制您设置大小。
To properly save and restore window sizes you should use GetWindowPlacementand SetWindowPlacementrespectively.
要正确保存和恢复窗口大小，您应该分别使用GetWindowPlacement和SetWindowPlacement。
回答by In silico
Yes, that's pretty much how it's done. You should prefer to use SetWindowPos()since it gives you quite a bit of control over how the window should be moved/resized.
是的，这几乎就是这样做的。您应该更喜欢使用，SetWindowPos()因为它可以让您对如何移动/调整窗口大小进行相当多的控制。
I typically use it like this (part of a small framework I wrote):
我通常这样使用它（我写的一个小框架的一部分）：
// Window member function
void Window::Move(int x, int y)
{
if(hwnd != 0)
{
::SetWindowPos(hwnd, 0, x, y, 0, 0,
SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE);
}
}
There's also a MoveWindow()function that does pretty much the same thing. With the SetWindowPos()function available, it's now more of a convenience function than anything else.
还有一个MoveWindow()功能几乎可以做同样的事情。有了SetWindowPos()可用的功能，它现在更像是一个方便的功能，而不是其他任何东西。
回答by Ben Voigt
You mean like MoveWindow?
你是说喜欢MoveWindow？
It takes hwnd, x, y, width, height, since there's no SWP_NOSIZEflag, it's actually more complicated to use it to just move the window, since you also have to fetch the size.
它需要 hwnd, x, y, width, height，因为没有SWP_NOSIZE标志，使用它来移动窗口实际上更复杂，因为你还必须获取大小。
