工控编程吧
标题:
上位机MFC三角形按钮实例
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作者:
qq263946146
时间:
2019-7-3 15:51
标题:
上位机MFC三角形按钮实例
效果演示
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例程通过自己编写代码实现按钮自绘,完成三角形按钮功能。
效果如上图,涉及的代码可以在下面复制使用。
或直接下载项目工程,内含编译好的可执行程序,可直接运行查看效果
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实现过程
1.新建基于对话框应用程序, 如上图添加控件,并排版。
2.将工程根目录按钮文件TRIANGLEBUTTON.CPP,TRIANGLEBUTTON.h复制到工程根目录。
并导入到自己工程中,这样工程内就新添加一按钮类CTriangleButton
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3.在主对话框包含CTriangleButton的头文件,并关联按钮控件,注意控件ID与变量的对应。
然后编译工程,按钮就可以变成三角形状了。
#include "TriangleButton.h"
CTriangleButton trif7;
CTriangleButton trif6;
CTriangleButton tri3d7;
CTriangleButton tri3d6;
CTriangleButton trif5;
CTriangleButton trif4;
CTriangleButton trif3;
CTriangleButton trif2;
CTriangleButton trif1;
CTriangleButton tri3d5;
CTriangleButton tri3d4;
CTriangleButton tri3d3;
CTriangleButton tri3d2;
CTriangleButton tri3d1;
DDX_Control(pDX, IDTRI_F_7, trif7);
DDX_Control(pDX, IDTRI_F_6, trif6);
DDX_Control(pDX, IDTRI_3D_7, tri3d7);
DDX_Control(pDX, IDTRI_3D_6, tri3d6);
DDX_Control(pDX, IDTRI_F_5, trif5);
DDX_Control(pDX, IDTRI_F_4, trif4);
DDX_Control(pDX, IDTRI_F_3, trif3);
DDX_Control(pDX, IDTRI_F_2, trif2);
DDX_Control(pDX, IDTRI_F_1, trif1);
DDX_Control(pDX, IDTRI_3D_5, tri3d5);
DDX_Control(pDX, IDTRI_3D_4, tri3d4);
DDX_Control(pDX, IDTRI_3D_3, tri3d3);
DDX_Control(pDX, IDTRI_3D_2, tri3d2);
DDX_Control(pDX, IDTRI_3D_1, tri3d1);
4.然后是实现对按钮文本,三角形方向的控制
依次双击单选框,添加其点击函数
void CCBtnDlg::OnRaDown()
{
ChangeTriButtonDirection(CTriangleButton:
OINT_DOWN);
}
void CCBtnDlg::OnRaRight()
{
ChangeTriButtonDirection(CTriangleButton:
OINT_RIGHT);
}
void CCBtnDlg::OnRaUp()
{
ChangeTriButtonDirection(CTriangleButton:
OINT_UP);
}
void CCBtnDlg::OnRaLeft()
{
ChangeTriButtonDirection(CTriangleButton:
OINT_LEFT);
}
其中void ChangeTriButtonDirection(CTriangleButton:
OINTDIRECTION d);为自己在主对话框添加的函数
void CCBtnDlg::ChangeTriButtonDirection(CTriangleButton:
OINTDIRECTION d)
{
trif1.SetDirection(d);
trif2.SetDirection(d);
trif3.SetDirection(d);
trif4.SetDirection(d);
trif5.SetDirection(d);
trif6.SetDirection(d);
trif7.SetDirection(d);
tri3d1.SetDirection(d);
tri3d2.SetDirection(d);
tri3d3.SetDirection(d);
tri3d4.SetDirection(d);
tri3d5.SetDirection(d);
tri3d6.SetDirection(d);
tri3d7.SetDirection(d);
Invalidate();
}
这样就可以通过单选框,设置三角按钮的方向。
5.其他的功能就可以使用MFC按钮类自带的,如按钮 文本的修改
可以在界面编辑中完成,双击添加编辑框文本变化触发函数便可
CString text;
GetDlgItemText(IDC_BUTTONTEXT,text);
trif1.SetWindowText(text);
trif2.SetWindowText(text);
trif3.SetWindowText(text);
trif4.SetWindowText(text);
trif5.SetWindowText(text);
trif6.SetWindowText(text);
trif7.SetWindowText(text);
tri3d1.SetWindowText(text);
tri3d2.SetWindowText(text);
tri3d3.SetWindowText(text);
tri3d4.SetWindowText(text);
tri3d5.SetWindowText(text);
tri3d6.SetWindowText(text);
tri3d7.SetWindowText(text);
下面是两文件内代码,可复制使用:
#ifndef __TRIANGLEBUTTON_H__INCLUDED
#define __TRIANGLEBUTTON_H__INCLUDED
class CTriangleButton : public CButton
{
public:
enum POINTDIRECTION {POINT_UP, POINT_DOWN, POINT_LEFT, POINT_RIGHT};
// Construction
public:
CTriangleButton();
virtual ~CTriangleButton();
// Attributes
public:
protected:
POINTDIRECTION PointDirection;
CRgn CurrentRegion;
// Operations
public:
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CTriangleButton)
public:
virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
protected:
virtual void PreSubclassWindow();
//}}AFX_VIRTUAL
public:
//note: SetWindowPos decreases the cx, cy parameter to nearest number dividable by two
BOOL SetWindowPos(const CWnd* pWndInsertAfter, int x, int y, int cx, int cy, UINT nFlags );
// Implementation
public:
void SetDirection(POINTDIRECTION PointDirection); //sets the direction of triangle
POINTDIRECTION GetDirection(); //gets the direction of triangle
// Generated message map functions
protected:
//{{AFX_MSG(CTriangleButton)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
#endif // __TRIANGLEBUTTON_H__INCLUDED
复制代码
#include "stdafx.h"
#include "math.h"
#include "TriangleButton.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CTriangleButton
CTriangleButton::CTriangleButton()
{
PointDirection = POINT_RIGHT;
}
CTriangleButton::~CTriangleButton()
{
}
BEGIN_MESSAGE_MAP(CTriangleButton, CButton)
//{{AFX_MSG_MAP(CRoundButton)
ON_WM_NCHITTEST()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CTriangleButton::SetDirection(POINTDIRECTION Direction)
{
PointDirection = Direction;
PreSubclassWindow();
}
CTriangleButton::POINTDIRECTION CTriangleButton::GetDirection()
{
return PointDirection;
}
BOOL CTriangleButton::SetWindowPos(const CWnd* pWndInsertAfter, int x, int y, int cx, int cy, UINT nFlags)
{
//Size must be dividable by two (else triangle will look strange when drawn)
cx -= cx % 2; cy -= cy % 2;
//TRACE("x=%i y=%i\n", cx, cy);
return CButton::SetWindowPos(pWndInsertAfter, x, y, cx, cy, nFlags);
}
/////////////////////////////////////////////////////////////////////////////
// CRoundButton message handlers
void CTriangleButton::PreSubclassWindow()
{
CButton::PreSubclassWindow();
//get client rectangle
CRect rect;
GetClientRect(rect);
rect.bottom = rect.right = min(rect.bottom,rect.right); //make it square
rect.bottom -= rect.bottom % 2; rect.right -= rect.right % 2;
SetWindowPos(NULL, 0, 0, rect.right, rect.bottom, SWP_NOMOVE | SWP_NOZORDER);
CPoint Head, RightLeg, LeftLeg;
switch (PointDirection) {
case POINT_UP :
Head.x = rect.right / 2; Head.y = 0;
RightLeg.x = rect.right; RightLeg.y = rect.bottom;
LeftLeg.x = 0; LeftLeg.y = rect.bottom;
break;
case POINT_DOWN :
Head.x = rect.right / 2; Head.y = rect.bottom;
RightLeg.x = 0; RightLeg.y = 0;
LeftLeg.x = rect.right; LeftLeg.y = 0;
break;
case POINT_LEFT :
Head.x = 0; Head.y = rect.bottom / 2;
RightLeg.x = rect.right; RightLeg.y = 0;
LeftLeg.x = rect.right; LeftLeg.y = rect.bottom;
break;
case POINT_RIGHT :
Head.x = rect.right; Head.y = rect.bottom / 2;
RightLeg.x = 0; RightLeg.y = rect.bottom;
LeftLeg.x = 0; LeftLeg.y = 0;
break;
default :
ASSERT(FALSE);
}//switch
CPoint points[3];
points[0] = Head; points[1] = RightLeg; points[2] = LeftLeg;
SetWindowRgn(NULL, FALSE);
CurrentRegion.DeleteObject();
CurrentRegion.CreatePolygonRgn(points, 3, ALTERNATE);
SetWindowRgn(CurrentRegion, TRUE);
ModifyStyle(0, BS_OWNERDRAW);
}
void CTriangleButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
ASSERT(lpDrawItemStruct != NULL);
CRect rect = lpDrawItemStruct->rcItem;
CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
UINT state = lpDrawItemStruct->itemState;
UINT nStyle = GetStyle();
int nSavedDC = pDC->SaveDC();
//make the rect a square
rect.bottom = rect.right = min(rect.bottom, rect.right);
pDC->FillSolidRect(rect, ::GetSysColor(COLOR_BTNFACE));
rect.right -= 1; rect.bottom -= 1; //avoid drawing outside area
//make some pens
CPen HighlightPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DHIGHLIGHT));
CPen DarkShadowPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DDKSHADOW));
CPen ShadowPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DSHADOW));
CPen BlackPen(PS_SOLID, 1, RGB(0,0,0));
//NOTE: If U use this class for NT apps only, use the implementation of FocusPen below
// instead, as WIN95 doesn't support this yet (though the doc says **dang ms-fools**)
// (WIN98 might also support this)
//LOGBRUSH logbrush; logbrush.lbStyle = BS_SOLID; logbrush.lbColor = RGB(0,0,0); logbrush.lbHatch = NULL;
//CPen FocusPen(PS_COSMETIC | PS_ALTERNATE, 1, &logbrush);
CPen FocusPen(PS_DOT, 0, RGB(0,0,0));
//Draw button
switch (PointDirection) {
case POINT_UP : {
//Draw the raised/sunken edges of the button (unless flat)
if (nStyle & BS_FLAT) { //style is flat
pDC->SelectObject(BlackPen);
pDC->MoveTo(rect.right / 2, 0);
pDC->LineTo(0, rect.bottom);
pDC->LineTo(rect.right, rect.bottom);
pDC->LineTo(rect.right / 2, 0);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(rect.right / 2, 2);
pDC->LineTo(2, rect.bottom - 1);
pDC->LineTo(rect.right - 2, rect.bottom - 1);
pDC->LineTo(rect.right / 2, 2);
} else { //style not flat
if ((state & ODS_SELECTED)) { //Button is down
pDC->SelectObject(HighlightPen);
pDC->MoveTo(0, rect.bottom);
pDC->LineTo(rect.right - 1, rect.bottom);
pDC->LineTo(rect.right / 2, 0);
pDC->SelectObject(ShadowPen);
pDC->LineTo(0, rect.bottom);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(rect.right / 2 - 1, 4);
pDC->LineTo(1, rect.bottom);
} else { //Button is not down
pDC->SelectObject(HighlightPen);
pDC->MoveTo(rect.right /2, 0);
pDC->LineTo(0, rect.bottom - 1);
pDC->SelectObject(ShadowPen);
pDC->LineTo(rect.right - 1, rect.bottom - 1);
pDC->LineTo(rect.right / 2, 0);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(rect.right / 2 + 2, 3);
pDC->LineTo(rect.right + 1, rect.bottom + 1);
pDC->MoveTo(rect.right - 1, rect.bottom);
pDC->LineTo(1, rect.bottom);
}//else|if
}//else|if
break;
}//case
case POINT_DOWN : {
//Draw the raised/sunken edges of the button (unless flat)
if (nStyle & BS_FLAT) { //style is flat
pDC->SelectObject(BlackPen);
pDC->MoveTo(rect.right / 2, rect.bottom);
pDC->LineTo(0, 0);
pDC->LineTo(rect.right, 0);
pDC->LineTo(rect.right / 2, rect.bottom);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(rect.right / 2, rect.bottom - 2);
pDC->LineTo(2, 1);
pDC->LineTo(rect.right - 2, 1);
pDC->LineTo(rect.right / 2, rect.bottom - 2);
} else { //style not flat
if ((state & ODS_SELECTED)) { //Button is down
pDC->SelectObject(ShadowPen);
pDC->MoveTo(rect.right, 1);
pDC->LineTo(1, 1);
pDC->LineTo(rect.right / 2, rect.bottom - 1);
pDC->SelectObject(BlackPen);
pDC->MoveTo(rect.right - 2, 2);
pDC->LineTo(1, 2);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(rect.right + 1, 0);
pDC->LineTo(rect.right / 2 + 1, rect.bottom + 1);
} else { //Button is not down
pDC->SelectObject(ShadowPen);
pDC->MoveTo(0, 0);
pDC->LineTo(rect.right / 2, rect.bottom);
pDC->LineTo(rect.right, 0);
pDC->MoveTo(1, 1);
pDC->LineTo(rect.right / 2 + 1, rect.bottom);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(rect.right, 2);
pDC->LineTo(rect.right / 2 + 1, rect.bottom + 1);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(0, 0);
pDC->LineTo(rect.right, 0);
}
}//else|if
break;
}//case
case POINT_LEFT : {
if (nStyle & BS_FLAT) { //style is flat
pDC->SelectObject(BlackPen);
pDC->MoveTo(rect.right, 0);
pDC->LineTo(0, rect.bottom / 2);
pDC->LineTo(rect.right, rect.bottom);
pDC->LineTo(rect.right, 0);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(rect.right - 1, 2);
pDC->LineTo(3, rect.bottom / 2);
pDC->LineTo(rect.right - 1, rect.bottom - 2);
pDC->LineTo(rect.right - 1, 2);
} else { //style not flat
if ((state & ODS_SELECTED)) { //Button is down
pDC->SelectObject(ShadowPen);
pDC->MoveTo(rect.right, 0);
pDC->LineTo(0, rect.bottom / 2);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(rect.right, 1);
pDC->LineTo(2, rect.bottom / 2);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(rect.right, 0);
pDC->LineTo(rect.right, rect.bottom);
pDC->LineTo(0, rect.bottom / 2);
} else { //Button is not down
pDC->SelectObject(ShadowPen);
pDC->MoveTo(rect.right - 1, 0);
pDC->LineTo(rect.right - 1, rect.bottom - 1);
pDC->LineTo(0, rect.bottom / 2);
pDC->MoveTo(1, rect.bottom / 2 + 1);
pDC->LineTo(6, rect.bottom / 2 + 4);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(rect.right, 1);
pDC->LineTo(rect.right, rect.bottom);
pDC->LineTo(2, rect.bottom / 2 + 2);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(0, rect.bottom / 2);
pDC->LineTo(rect.right, 0);
}
}//else|if
break;
}//case
case POINT_RIGHT : {
if (nStyle & BS_FLAT) { //style is flat
pDC->SelectObject(BlackPen);
pDC->MoveTo(0, 0);
pDC->LineTo(rect.right, rect.bottom / 2);
pDC->LineTo(0, rect.bottom);
pDC->LineTo(0, 0);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(1, 2);
pDC->LineTo(rect.right - 2, rect.bottom / 2);
pDC->LineTo(1, rect.bottom - 2);
pDC->LineTo(1, 2);
} else { //style not flat
if ((state & ODS_SELECTED)) { //Button is down
pDC->SelectObject(ShadowPen);
pDC->MoveTo(0, rect.bottom);
pDC->LineTo(0, 0);
pDC->LineTo(rect.right, rect.bottom / 2);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(1, rect.bottom - 2);
pDC->LineTo(1, 1);
pDC->MoveTo(rect.right - 3, rect.bottom / 2);
pDC->LineTo(0, 1);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(0, rect.bottom);
pDC->LineTo(rect.right, rect.bottom / 2);
} else { //Button is not down
pDC->SelectObject(ShadowPen);
pDC->MoveTo(0, rect.bottom);
pDC->LineTo(rect.right, rect.bottom / 2);
pDC->SelectObject(DarkShadowPen);
pDC->MoveTo(0, rect.bottom + 1);
pDC->LineTo(rect.right, rect.bottom / 2 + 1);
pDC->SelectObject(HighlightPen);
pDC->MoveTo(0, rect.bottom);
pDC->LineTo(0, 0);
pDC->LineTo(rect.right, rect.bottom / 2);
}
}//else|if
break;
}//case
default :
ASSERT(FALSE);
}//switch
//Draw text if any
CString strText;
GetWindowText(strText);
if (!strText.IsEmpty()) {
CSize TextExtent = pDC->GetTextExtent(strText);
CPoint TextPos;
pDC->SetBkMode(TRANSPARENT);
switch (PointDirection) {
case POINT_UP : {
TextPos = CPoint((int)(rect.right / 2.0 - TextExtent.cx / 2.0),
rect.bottom - (int)(rect.bottom / 5.0 + TextExtent.cy));
int iXLimit = (int)((rect.bottom / 5.0 + TextExtent.cy) * 4.0 / 7.0);
CRgn rgn; rgn.CreateRectRgn(iXLimit, TextPos.y, rect.right - iXLimit, rect.bottom - 2);
pDC->SelectClipRgn(&rgn);
break;
}//case
case POINT_DOWN : {
TextPos = CPoint((int)(rect.right / 2.0 - TextExtent.cx / 2.0),
(int)(rect.bottom / 5.0));
int iXLimit = (int)((rect.bottom / 5.0 + TextExtent.cy) * 4.0 / 7.0);
CRgn rgn; rgn.CreateRectRgn(iXLimit, (int)(rect.bottom / 5.0), rect.right - iXLimit, (int)(rect.bottom / 5.0) + TextExtent.cy + 2);
pDC->SelectClipRgn(&rgn);
break;
}
case POINT_LEFT : {
TextPos = CPoint((int)((rect.right / 2.0 - TextExtent.cx / 2.0) + (rect.right / 8.0)),
(int)(rect.bottom / 2.0 - TextExtent.cy / 2.0) );
int iXLimitLeft = (int)(TextExtent.cy / 2.0 * 7.0 / 4.0) + 4;
int iXLimitRight = rect.right - 4;
CRgn rgn; rgn.CreateRectRgn(iXLimitLeft, (int)(rect.bottom / 2.0 - TextExtent.cy / 2.0),
iXLimitRight, (int)(rect.bottom / 2.0 + TextExtent.cy / 2.0) );
pDC->SelectClipRgn(&rgn);
break;
}//case
case POINT_RIGHT : {
TextPos = CPoint((int)((rect.right / 2.0 - TextExtent.cx / 2.0) - (rect.right / 8.0)),
(int)(rect.bottom / 2.0 - TextExtent.cy / 2.0) );
int iXLimitLeft = 4;
int iXLimitRight = rect.right - (int)(TextExtent.cy / 2.0 * 7.0 / 4.0) - 4;
CRgn rgn; rgn.CreateRectRgn(iXLimitLeft, (int)(rect.bottom / 2.0 - TextExtent.cy / 2.0),
iXLimitRight, (int)(rect.bottom / 2.0 + TextExtent.cy / 2.0) );
pDC->SelectClipRgn(&rgn);
break;
}//case
default :
ASSERT(FALSE);
}//switch
//common for all directions
if (state & ODS_SELECTED) TextPos.Offset(1,1);
if (state & ODS_DISABLED) {
pDC->DrawState(TextPos, TextExtent, strText, DSS_DISABLED, TRUE, 0, (HBRUSH)NULL);
} else {
pDC->TextOut(TextPos.x, TextPos.y, strText);
}
}//if
//Draw the focus triangle on the inside of the button if we have focus
if ((state & ODS_FOCUS)) {
CRgn rgn; rgn.CreateRectRgn(rect.left, rect.top, rect.right, rect.bottom);
pDC->SelectClipRgn(&rgn);
pDC->SelectObject(FocusPen);
switch (PointDirection) {
case POINT_UP : {
pDC->MoveTo(rect.right / 2, 12);
pDC->LineTo(9, rect.bottom - 6);
pDC->LineTo(rect.right - 9, rect.bottom - 6);
pDC->LineTo(rect.right / 2, 12);
break;
}
case POINT_DOWN : {
pDC->MoveTo(rect.right / 2 + 1, rect.bottom - 13);
pDC->LineTo(10, 6);
pDC->LineTo(rect.right - 9, 6);
pDC->LineTo(rect.right / 2 + 1, rect.bottom - 13);
break;
}
case POINT_LEFT : {
pDC->MoveTo(12, rect.bottom / 2);
pDC->LineTo(rect.right - 6, 9);
pDC->LineTo(rect.right - 6, rect.bottom - 9);
pDC->LineTo(12, rect.bottom / 2);
break;
}//case
case POINT_RIGHT : {
pDC->MoveTo(6, 9);
pDC->LineTo(rect.right - 12, rect.bottom / 2);
pDC->LineTo(6, rect.bottom - 9);
pDC->LineTo(6, 9);
break;
}//case
default :
ASSERT(FALSE);
}//switch
}//if
pDC->RestoreDC(nSavedDC);
}
/* I'm not sure what this function is supposed to do, but it was in the
CRoundButton class i used to make this class, so I have implemented it, though
I don't know what the function should do ! (if it is nescessary just remove comments)
UINT CTriangleButton::OnNcHitTest(CPoint point)
{
ScreenToClient(&point);
if (CurrentRegion.PtInRegion(point)) {
//TRACE("HTCLIENT: %i, %i\n", point.x, point.y);
return HTCLIENT;
}
else {
//TRACE("HTNOWHERE: %i, %i\n", point.x, point.y);
return HTNOWHERE;
}
}
*/
复制代码
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