不规则窗体的源码,我试过了,可以,速度挺快。。
SSTS 2001-05-14 01:24:00 以下源码是快速创建不规则窗体的,还可以移动。
//------------------------------------------------------------------------
//Unit1.h
#ifndef Unit1H
#define Unit1H
//------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <ExtCtrls.hpp>
#include <Graphics.hpp>
#include <Menus.hpp>
#include <Dialogs.hpp>
#include <ExtDlgs.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published: // IDE-managed Components
TImage *Image1;
TPopupMenu *PopupMenu1;
TMenuItem *Exit1;
TOpenPictureDialog *OpenPictureDialog1;
TMenuItem *Open1;
void __fastcall Exit1Click(TObject *Sender);
void __fastcall FormCreate(TObject *Sender);
void __fastcall Image1MouseDown(TObject *Sender,
TMouseButton Button, TShiftState Shift, int X, int Y);
void __fastcall Open1Click(TObject *Sender);
private: // User declarations
void __fastcall BmpToRgn();
public: // User declarations
__fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif
//unit1.cpp
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Exit1Click(TObject *Sender)
{
Close();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
BmpToRgn();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Image1MouseDown(TObject *Sender,
TMouseButton Button, TShiftState Shift, int X, int Y)
{
if(Button == mbLeft)
{
ReleaseCapture();
Perform(WM_NCLBUTTONDOWN, HTCAPTION, 0);
}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BmpToRgn()
{
Image1->AutoSize=true;
Form1->AutoSize=true;
Form1->BorderStyle=bsNone;
TColor ColorKey=Image1->Canvas->Pixels[0][0];
int x,y;
int l,r;
POINT *a;
bool lb,rb;
HRGN WndRgn,TempRgn;
if((a=(POINT *)malloc(Width*2*(sizeof(POINT))))==NULL)
{
ShowMessage("申请内存失败!");
exit(0);
}
l=0;r=Image1->Height*2-1;
WndRgn=CreateRectRgn(0,0,Image1->Width,Image1->Height);
for(y=0;y<Image1->Height;y++)
{
lb=true;
for(x=0;x<Image1->Width+1;x++)
if(Image1->Canvas->Pixels[x][y]!=ColorKey)
{
a[l].x=x;
a[l].y=y;
lb=false;
break;
}
if(lb) a[l]=a[l-1];
l++;
rb=true;
for(x=Image1->Width;x>=0;x--)
if(Image1->Canvas->Pixels[x][y]!=ColorKey)
{
a[r].x=x;
a[r].y=y;
rb=false;
break;
}
if(rb) a[r]=a[r+1];
r--;
}
r=Image1->Height*2-1;
for(y=0;y<Image1->Height-1;y++)
{
for(x=a[y].x;x<=a[r].x;x++)
if(Image1->Canvas->Pixels[x][y]==ColorKey)
{
TempRgn=CreateRectRgn(x,y,x+1,y+1);
CombineRgn(WndRgn,WndRgn,TempRgn,RGN_XOR);
DeleteObject(TempRgn);
}
r--;
}
//TempRgn=CreatePolygonRgn(a,Image1->Height*2,ALTERNATE);
TempRgn=CreatePolygonRgn(a,Image1->Height*2,WINDING);
CombineRgn(WndRgn,WndRgn,TempRgn,RGN_AND);
DeleteObject(TempRgn);
delete a;
SetWindowRgn(Handle,WndRgn,true);
}
void __fastcall TForm1::Open1Click(TObject *Sender)
{
if(OpenPictureDialog1->Execute())
{
Image1->Picture->LoadFromFile(OpenPictureDialog1->FileName);
BmpToRgn();
}
}
//---------------------------------------------------------------------------
对啦,图片的背景色要相同。
图片在IMAGE1的属性里加,不是在运行期通过LoadFromFile()加的。。