无边框窗体缩放时抖动

2017-11-11 01:02:45 414 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

PySide6实战：打造可拖拽缩放的无边框窗口（附完整代码）本文详细介绍了如何使用PySide6框架实现一个可拖拽缩放的无边框自定义窗口。通过核心的鼠标事件处理和边缘检测逻辑，提供了完整的代码示例，包括窗口基类构建、自定义标题栏集成以及实战案例，帮助开发者打造高颜值、交互流畅的现代化桌面应用界面。阅读详情

刚接触win32，写了一个简单的无边框窗体。但当在窗体左上角对窗体进行缩放时，窗体的右边界和下边界会不断抖动。在右上角和左下角缩放时有相同的问题。在右下角缩放时是正常的。请问怎么解决？
代码如下

#if defined(UNICODE) && !defined(_UNICODE)

    #define _UNICODE

#elif defined(_UNICODE) && !defined(UNICODE)

    #define UNICODE

#endif



#include <tchar.h>

#include <windows.h>



/*  Declare Windows procedure  */

LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);



/*  Make the class name into a global variable  */

TCHAR szClassName[ ] = _T("CodeBlocksWindowsApp");



int WINAPI WinMain (HINSTANCE hThisInstance,

                     HINSTANCE hPrevInstance,

                     LPSTR lpszArgument,

                     int nCmdShow)

{

    HWND hwnd;               /* This is the handle for our window */

    MSG messages;            /* Here messages to the application are saved */

    WNDCLASSEX wincl;        /* Data structure for the windowclass */



    /* The Window structure */

    wincl.hInstance = hThisInstance;

    wincl.lpszClassName = szClassName;

    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */

    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */

    wincl.cbSize = sizeof (WNDCLASSEX);



    /* Use default icon and mouse-pointer */

    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);

    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);

    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);

    wincl.lpszMenuName = NULL;                 /* No menu */

    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */

    wincl.cbWndExtra = 0;                      /* structure or the window instance */

    /* Use Windows's default colour as the background of the window */

    wincl.hbrBackground = (HBRUSH) COLOR_GRAYTEXT;



    /* Register the window class, and if it fails quit the program */

    if (!RegisterClassEx (&wincl))

        return 0;



    /* The class is registered, let's create the program*/

    hwnd = CreateWindowEx (

           0,                   /* Extended possibilites for variation */

           szClassName,         /* Classname */

           _T("Code::Blocks Template Windows App"),       /* Title Text */

           WS_POPUP, /* default window */

           200,       /* Windows decides the position */

           200,       /* where the window ends up on the screen */

           640,                 /* The programs width */

           480,                 /* and height in pixels */

           HWND_DESKTOP,        /* The window is a child-window to desktop */

           NULL,                /* No menu */

           hThisInstance,       /* Program Instance handler */

           NULL                 /* No Window Creation data */

           );



    /* Make the window visible on the screen */

    ShowWindow (hwnd, nCmdShow);



    /* Run the message loop. It will run until GetMessage() returns 0 */

    while (GetMessage (&messages, NULL, 0, 0))

    {

        /* Translate virtual-key messages into character messages */

        TranslateMessage(&messages);

        /* Send message to WindowProcedure */

        DispatchMessage(&messages);

    }



    /* The program return-value is 0 - The value that PostQuitMessage() gave */

    return messages.wParam;

}





/*  This function is called by the Windows function DispatchMessage()  */



LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

    POINT pt;

    RECT rcClient;



    switch (message)                  /* handle the messages */

    {



        case WM_NCHITTEST:



            pt.x = LOWORD(lParam);

            pt.y = HIWORD(lParam);

            ScreenToClient(hwnd,&pt);

            GetClientRect(hwnd, &rcClient);



            if (pt.x<rcClient.left+5&&pt.y<rcClient.top+5)//×óÉÏ½Ç

            {

                return HTTOPLEFT;

            }

            if (pt.x>rcClient.right-5 && pt.y<rcClient.top+5)//ÓÒÉÏ½Ç

            {

                return HTTOPRIGHT;

            }

            if (pt.x<rcClient.left+5 && pt.y>rcClient.bottom-5)//×óÏÂ½Ç

            {

                return HTBOTTOMLEFT;

            }

            if (pt.x>rcClient.right-5 && pt.y>rcClient.bottom-5)//ÓÒÏÂ½Ç

            {

                return HTBOTTOMRIGHT;

            }

            if (pt.y<rcClient.top+10)

            {

                return HTCAPTION;

            }

            break;



        case WM_DESTROY:

            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */

            break;

        default:                      /* for messages that we don't deal with */

            return DefWindowProc (hwnd, message, wParam, lParam);

    }



    return 0;

}

...全文

WinForms窗体尺寸锁定：从属性失效到WM_GETMINMAXINFO深度拦截窗体尺寸控制是Windows桌面应用的基础能力，涉及窗口样式（Window Style）、消息机制与DPI感知等底层原理。其技术价值在于保障医疗、工业、金融等关键场景下的UI一致性与操作安全性。常见误区是仅依赖FormBorderStyle或MaximumSize等表层属性，却忽视Alt+Space系统菜单、双击标题栏、多显示器DPI切换等真实触发路径。尤其在高DPI缩放和MDI嵌套环境下，逻辑像素与物理像素的错位会导致‘设了最大尺寸仍可拉大’等典型问题。本文聚焦WinForms中通过WndProc拦截WM 阅读详情

PG_12138

界面 15,976 成员 115,866 内容

+ 关注 + 加入社区

切换为时间正序

schlafenhamster 2017-11-12

打赏
举报

給你改了改，（WM_NCHITTEST），没问题的，4个角缩放，客户区移动。


// w32NoBoard.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"

#include <windows.h> 
#include <tchar.h> 
#include <stdio.h> 
  
/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); 
/*  Make the class name into a global variable  */
TCHAR szClassName[ ] = _T("WindowsApp"); 
  
int WINAPI WinMain (HINSTANCE hThisInstance, 
                     HINSTANCE hPrevInstance, 
                     LPSTR lpszArgument, 
                     int nCmdShow) 
{ 
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */
  
    /* The Window structure */
    wincl.cbSize = sizeof (WNDCLASSEX); 
    wincl.hInstance = hThisInstance; 
    wincl.lpszClassName = szClassName; 
    wincl.lpfnWndProc = WindowProcedure;/* This function is called by windows */
    wincl.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;/* Catch double-clicks */
  
    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION); 
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION); 
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW); 
    wincl.lpszMenuName = NULL;  /* No menu */
    wincl.cbClsExtra = 0;       /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;       /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) CTLCOLOR_DLG;//COLOR_GRAYTEXT; 
  
    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl)) return 0; 
    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx(0, /* Extended possibilites for variation */
           szClassName,      /* Classname */
           0,				 /* Title Text */
           WS_POPUP, /* default window */
           200,      /* Windows decides the position */
           200,      /* where the window ends up on the screen */
           640,          /* The programs width */
           480,          /* and height in pixels */
           HWND_DESKTOP, /* The window is a child-window to desktop */
           NULL,         /* No menu */
           hThisInstance,/* Program Instance handler */
           NULL          /* No Window Creation data */
           ); 
    /* Make the window visible on the screen */
    ShowWindow (hwnd, nCmdShow);
    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0)) 
    {/* Translate virtual-key messages into character messages */
        TranslateMessage(&messages); 
        /* Send message to WindowProcedure */
        DispatchMessage(&messages); 
    } 
    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam; 
} 
//  
#define TestBorder 5

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 
{ 
static POINT ptLast;
    POINT pt; 
    RECT rc;
    switch (message)
    { 
        case WM_NCHITTEST: 
			pt.x = LOWORD(lParam); 
			pt.y = HIWORD(lParam); 
			GetWindowRect(hwnd, &rc); 
 // move window
			rc.top+=TestBorder;
			rc.bottom-=TestBorder;
			rc.left+=TestBorder;
			rc.right-=TestBorder;
			if(PtInRect(&rc,pt))
			{
				return HTCAPTION; 
			}
// size window
			if (pt.x < rc.left && pt.y < rc.top)
			{ 
				return HTTOPLEFT; 
			} 
			if (pt.x>rc.right && pt.y<rc.top)
			{ 
				return HTTOPRIGHT; 
			} 
			if (pt.x<rc.left && pt.y>rc.bottom)
			{ 
				return HTBOTTOMLEFT; 
			} 
			if (pt.x>rc.right && pt.y>rc.bottom)
			{ 
				return HTBOTTOMRIGHT; 
			} 
			break; 
        case WM_CHAR:
			if((TCHAR) wParam == VK_RETURN) PostQuitMessage (0);       
            break; 
		case WM_MOUSEMOVE:
			pt.x = LOWORD(lParam);
			pt.y = HIWORD(lParam);  
			if(MK_LBUTTON==wParam)
			{
				GetWindowRect(hwnd,&rc);
				::MoveWindow(hwnd,rc.left+(pt.x-ptLast.x), rc.top+(pt.y-ptLast.y),
					rc.right-rc.left, rc.bottom-rc.top,TRUE);
			}
			else
			{
				ptLast=pt;
			}
		break;
        default: /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam); 
    } 
//  
    return 0; 
}

PG_12138 2017-11-12

打赏
举报

引用 4 楼 schlafenhamster 的回复:

給你改了改，（WM_NCHITTEST），没问题的，4个角缩放，客户区移动。


// w32NoBoard.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"

#include <windows.h> 
#include <tchar.h> 
#include <stdio.h> 
  
/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); 
/*  Make the class name into a global variable  */
TCHAR szClassName[ ] = _T("WindowsApp"); 
  
int WINAPI WinMain (HINSTANCE hThisInstance, 
                     HINSTANCE hPrevInstance, 
                     LPSTR lpszArgument, 
                     int nCmdShow) 
{ 
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */
  
    /* The Window structure */
    wincl.cbSize = sizeof (WNDCLASSEX); 
    wincl.hInstance = hThisInstance; 
    wincl.lpszClassName = szClassName; 
    wincl.lpfnWndProc = WindowProcedure;/* This function is called by windows */
    wincl.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;/* Catch double-clicks */
  
    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION); 
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION); 
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW); 
    wincl.lpszMenuName = NULL;  /* No menu */
    wincl.cbClsExtra = 0;       /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;       /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) CTLCOLOR_DLG;//COLOR_GRAYTEXT; 
  
    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl)) return 0; 
    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx(0, /* Extended possibilites for variation */
           szClassName,      /* Classname */
           0,				 /* Title Text */
           WS_POPUP, /* default window */
           200,      /* Windows decides the position */
           200,      /* where the window ends up on the screen */
           640,          /* The programs width */
           480,          /* and height in pixels */
           HWND_DESKTOP, /* The window is a child-window to desktop */
           NULL,         /* No menu */
           hThisInstance,/* Program Instance handler */
           NULL          /* No Window Creation data */
           ); 
    /* Make the window visible on the screen */
    ShowWindow (hwnd, nCmdShow);
    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0)) 
    {/* Translate virtual-key messages into character messages */
        TranslateMessage(&messages); 
        /* Send message to WindowProcedure */
        DispatchMessage(&messages); 
    } 
    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam; 
} 
//  
#define TestBorder 5

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 
{ 
static POINT ptLast;
    POINT pt; 
    RECT rc;
    switch (message)
    { 
        case WM_NCHITTEST: 
			pt.x = LOWORD(lParam); 
			pt.y = HIWORD(lParam); 
			GetWindowRect(hwnd, &rc); 
 // move window
			rc.top+=TestBorder;
			rc.bottom-=TestBorder;
			rc.left+=TestBorder;
			rc.right-=TestBorder;
			if(PtInRect(&rc,pt))
			{
				return HTCAPTION; 
			}
// size window
			if (pt.x < rc.left && pt.y < rc.top)
			{ 
				return HTTOPLEFT; 
			} 
			if (pt.x>rc.right && pt.y<rc.top)
			{ 
				return HTTOPRIGHT; 
			} 
			if (pt.x<rc.left && pt.y>rc.bottom)
			{ 
				return HTBOTTOMLEFT; 
			} 
			if (pt.x>rc.right && pt.y>rc.bottom)
			{ 
				return HTBOTTOMRIGHT; 
			} 
			break; 
        case WM_CHAR:
			if((TCHAR) wParam == VK_RETURN) PostQuitMessage (0);       
            break; 
		case WM_MOUSEMOVE:
			pt.x = LOWORD(lParam);
			pt.y = HIWORD(lParam);  
			if(MK_LBUTTON==wParam)
			{
				GetWindowRect(hwnd,&rc);
				::MoveWindow(hwnd,rc.left+(pt.x-ptLast.x), rc.top+(pt.y-ptLast.y),
					rc.right-rc.left, rc.bottom-rc.top,TRUE);
			}
			else
			{
				ptLast=pt;
			}
		break;
        default: /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam); 
    } 
//  
    return 0; 
}

非常感谢

PG_12138 2017-11-11

打赏
举报

引用 1 楼 zgl7903 的回复:

VC6 XP 下测试没有你所描述的问题试试 wincl.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;

试了一下，问题依然存在。我刚刚发现，QQ、酷狗、百度云的界面也存在这个问题。

schlafenhamster 2017-11-11

打赏
举报

VC6 XP 下测试没有你所描述的问题注意要等光标变化后再缩放！另外退出代码如下 case WM_CHAR: if((TCHAR) wParam== 0x0D) PostQuitMessage (0); break;

zgl7903 2017-11-11

打赏
举报

VC6 XP 下测试没有你所描述的问题试试 wincl.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;

无边框窗体缩放时抖动

相关推荐