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__EASYSIZE_H_

By Frances Wright,2014-10-13 16:11
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EasySize.h2010-04-15 18:56/*===================================================*\ | | | EASY-SIZE Macros | | | | Copyright (c) 2001 - Marc Richarme | | devix@devix.cjb.net | | http://..

     EasySize.h2010-04-15

    18:56/*===================================================*\ | | | EASY-SIZE Macros | | | | Copyright (c) 2001 - Marc Richarme | | devix@devix.cjb.net | | http://devix.cjb.net | | | | License: | | | | You may use this code in any commersial or non- | | commersial application, and you may redistribute | | this file (and even modify it if you wish) as | | long as you keep this notice untouched in any | | version you redistribute. | | | | Usage: | | | | - Insert 'DECLARE_EASYSIZE' somewhere in your | | class declaration | | - Insert an easysize map in the beginning of your | | class implementation (see documentation) and | | outside of any function. | | - Insert 'INIT_EASYSIZE;' in your | | OnInitDialog handler. | | - Insert 'UPDATE_EASYSIZE' in your OnSize handler | | - Optional: Insert 'EASYSIZE_MINSIZE(mx,my);' in | | your OnSizing handler if you want to specify | | a minimum size for your dialog | | | | Check http://devix.cjb.net for the | | docs and new versions | | | \*===================================================*/

#ifndef __EASYSIZE_H_

    #define __EASYSIZE_H_

    #define ES_BORDER 0xffffffff

    #define ES_KEEPSIZE 0xfffffffe

    #define ES_HCENTER 0x00000001

    #define ES_VCENTER 0x00000002

    #define DECLARE_EASYSIZE \

void __ES__RepositionControls(BOOL bInit);\

    void __ES__CalcBottomRight(CWnd *pThis, BOOL bBottom, int &bottomright, int &topleft, UINT id, UINT br, int es_br, CRect &rect, int clientbottomright); #define INIT_EASYSIZE __ES__RepositionControls(TRUE);

    __ES__RepositionControls(FALSE)

    #define UPDATE_EASYSIZE if(GetWindow(GW_CHILD)!=NULL)

    __ES__RepositionControls(FALSE)

    #define EASYSIZE_MINSIZE(mx,my,s,r) if(r->right-r->left < mx) { if((s == WMSZ_BOTTOMLEFT)||(s == WMSZ_LEFT)||(s == WMSZ_TOPLEFT)) r->left = r->right-mx; else r->right = r->left+mx; } if(r->bottom-r->top < my) { if((s == WMSZ_TOP)||(s == WMSZ_TOPLEFT)||(s == WMSZ_TOPRIGHT)) r->top = r->bottom-my; else r->bottom = r->top+my; }

    #define BEGIN_EASYSIZE_MAP(class) \

    void class::__ES__CalcBottomRight(CWnd *pThis, BOOL bBottom, int &bottomright, int &topleft, UINT id, UINT br, inif(br==ES_BORDER) bottomright =

    clientbottomright-es_br;\

    else if(br==ES_KEEPSIZE) bottomright = topleft+es_br;\

    else { CRect rect2;\

    pThis->GetDlgItem(br)->GetWindowRect(rect2); pThis->ScreenToClient(rect2);\ bottomright = (bBottom?rect2.top:rect2.left) - es_br;}}\

    void class::__ES__RepositionControls(BOOL bInit) { CRect rect,rect2,client; GetClientRect(client);

    #define END_EASYSIZE_MAP Invalidate(); UpdateWindow(); }

    #define EASYSIZE(id,l,t,r,b,o) \

    static int id##_es_l, id##_es_t, id##_es_r, id##_es_b;\

    if(bInit) {\

    GetDlgItem(id)->GetWindowRect(rect); ScreenToClient(rect);\

    if(o & ES_HCENTER) id##_es_l = rect.Width()/2; else {\

    if(l==ES_BORDER) id##_es_l = rect.left; else if(l==ES_KEEPSIZE) id##_es_l = rect.Width(); else {\

    GetDlgItem(l)->GetWindowRect(rect2); ScreenToClient(rect2);\

    id##_es_l = rect.left-rect2.right;}}\

    if(o & ES_VCENTER) id##_es_t = rect.Height()/2; else {\

    if(t==ES_BORDER) id##_es_t = rect.top; else if(t==ES_KEEPSIZE) id##_es_t = rect.Height(); else {\

    GetDlgItem(t)->GetWindowRect(rect2); ScreenToClient(rect2);\

    id##_es_t = rect.top-rect2.bottom;}}\

    if(o & ES_HCENTER) id##_es_r = rect.Width(); else { if(r==ES_BORDER) id##_es_r = client.right-rect.right; else if(r==ES_KEEPSIZE) id##_es_r = rect.Width(); else {\ GetDlgItem(r)->GetWindowRect(rect2); ScreenToClient(rect2);\

    id##_es_r = rect2.left-rect.right;}}\

    if(o & ES_VCENTER) id##_es_b = rect.Height(); else { if(b==ES_BORDER) id##_es_b = client.bottom-rect.bottom; else if(b==ES_KEEPSIZE) id##_es_b = rect.Height(); else {\

GetDlgItem(b)->GetWindowRect(rect2); ScreenToClient(rect2);\

    id##_es_b = rect2.top-rect.bottom;}}\

    } else {\

    int left,top,right,bottom; BOOL bR = FALSE,bB = FALSE;\

    if(o & ES_HCENTER) { int _a,_b;\

    if(l==ES_BORDER) _a = client.left; else { GetDlgItem(l)->GetWindowRect(rect2); ScreenToClient(rect2); _a = rect2.right; }\

    if(r==ES_BORDER) _b = client.right; else { GetDlgItem(r)->GetWindowRect(rect2); ScreenToClient(rect2); _b = rect2.left; }\

    left = _a+((_b-_a)/2-id##_es_l); right = left + id##_es_r;} else {\ if(l==ES_BORDER) left = id##_es_l;\

    else if(l==ES_KEEPSIZE)

    { __ES__CalcBottomRight(this,FALSE,right,left,id,r,id##_es_r,rect,client.right); left = right-id##_es_l;\

    } else { GetDlgItem(l)->GetWindowRect(rect2); ScreenToClient(rect2); left = rect2.right + id##_es_l; }\

    if(l != ES_KEEPSIZE)

    __ES__CalcBottomRight(this,FALSE,right,left,id,r,id##_es_r,rect,client.right);}\ if(o & ES_VCENTER) { int _a,_b;\

    if(t==ES_BORDER) _a = client.top; else { GetDlgItem(t)->GetWindowRect(rect2); ScreenToClient(rect2); _a = rect2.bottom; }\

    if(b==ES_BORDER) _b = client.bottom; else { GetDlgItem(b)->GetWindowRect(rect2); ScreenToClient(rect2); _b = rect2.top; }\

    top = _a+((_b-_a)/2-id##_es_t); bottom = top + id##_es_b;} else {\ if(t==ES_BORDER) top = id##_es_t;\

    else if(t==ES_KEEPSIZE)

    { __ES__CalcBottomRight(this,TRUE,bottom,top,id,b,id##_es_b,rect,client.bottom); top = bottom-id##_es} else { GetDlgItem(t)->GetWindowRect(rect2); ScreenToClient(rect2); top = rect2.bottom + id##_es_t; }\

    if(t != ES_KEEPSIZE)

    __ES__CalcBottomRight(this,TRUE,bottom,top,id,b,id##_es_b,rect,client.bottom);}\ GetDlgItem(id)->MoveWindow(left,top,right-left,bottom-top,FALSE);\ }

    #endif //__EASYSIZE_H_

//////////////////////////////////////////////////////////

    mfc窗口大小可拖动方法2010-04-15 18:55假设创建的对话框的类名是CMyDlg;具体过程如

    下,

步骤一,把easysize.h拷贝到CMyDlg项目文件夹中;同时在CMyDlg.h文件和.cpp文件

    中加入#include "easysize.h"

步骤二,在CMyDlg类的h文件中;加入DECLARE_EASYSIZE;注意结尾处不要加“:”。

class CMyDlg : public CDialog

{

     DECLARE_EASYSIZE

// Construction

}

    步骤三,在CMyDlg类的OnInitDialog()函数的结尾处加入INIT_EASYSIZE, 注意此处结尾处要加“:”。

BOOL CMyDlg::OnInitDialog()

{

    // TODO: Add extra initialization here

     INIT_EASYSIZE;

     return TRUE; // return TRUE unless you set the focus to a control

}

    步骤四,增加WM_SIZE消息响应函数OnSize();在函数中加入UPDATE_EASYSIZE;注意此处结尾处要加“:”。

void CMyDlg::OnSize(UINT nType, int cx, int cy)

{

     CDialog::OnSize(nType, cx, cy);

     // TODO: Add your message handler code here

     UPDATE_EASYSIZE;

}

步骤五,在CMyDlgcpp文件中添加EASYSIZE 的宏映射

BEGIN_EASYSIZE_MAP(CMyDlg)

    EASYSIZE(control,left,top,right,bottom,options)

END_EASYSIZE_MAP

注意,如果没有添加EASYSIZE 的宏映射就开始编译的话;会出现链接错误!

这里需要解释的是宏EASYSIZE()的用法;其原型如下,

    EASYSIZE(control,left,top,right,bottom,options)

该宏表示对ID值为control的控件实施缩放效果;缩放后的上下左右位置由

    control,left,top,right,bottom来确定;大小由option确定。

    其中,control为对话框中的控件ID值;left,top,right,bottom四个参数为控件位置的坐标;其值可以选择ES_BOARD,ES_KEEPSIZE, 控件ID值三者之一。Options可以为ES_HCENTER, ES_VCENTER的结合;options可置0

ES_BOARD表示控件与对话框边界,以下简称边界(的距离:

ES_KEEPSIZE表示控件水平/垂直方向上尺寸保持不变:

控件ID值表示当前控件与指定控件之间的距离:

ES_HCENTER表示缩放后控件在指定位置内水平居中:

ES_VCENTER表示缩放后控件在指定位置内垂直居中:

例如,

EASYSIZE(IDOK,ES_BORDER,ES_BORDER,ES_BORDER,ES_BORDER,0)

    表示缩放后;值为IDOK的控件;距离边界上下左右位置保持不变;水平和垂直方向尺寸拉伸:

    EASYSIZE(IDOK,ES_BORDER,ES_BORDER,ES_BORDER,ES_BORDER,ES_HCENTER)

表示缩放后;值为IDOK的控件;距离边界上下位置保持不变;垂直方向尺寸拉伸;

EASYSIZE(IDOK,ES_BORDER,ES_BORDER,ES_BORDER,ES_BORDER,ES_HCENTER| ES_HCENTER)

表示缩放后;值为IDOK的控件;在对话框内垂直居中;水平居中:

    EASYSIZE(IDOK,ES_BORDER,ES_KEEPSIZE,ES_KEEPSIZE,ES_BORDER,0)

表示缩放后;值为IDOK的控件;距离边界左、下方位置保持不变;同时保持控件尺寸:

    EASYSIZE(IDOK,ES_BORDER,ES_KEEPSIZE, ES_BORDER,ES_BORDER,0)

表示缩放后;值为IDOK的控件;距离边界左、右、下方位置保持不变;水平方向尺寸拉伸;

    垂直方向尺寸不变:

    EASYSIZE(IDOK,ES_BORDER,ES_BORDER,IDCANCEL,ES_BORDER,0)

表示缩放后;值为IDOK的控件;距离边界上下左位置保持不变;距离ID值为IDCANCEL的右

    方位置距离保持不变;水平和垂直方向尺寸拉伸:,当使用指定控件作为定位参数时候;确保

    指定控件的EASYSIZE在该宏前面(

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