[자답 해결] GDI+ DrawCurve 작동이 잘 안되네요.
글쓴이: cppig1995 / 작성시간: 수, 2007/07/11 - 7:47오전
정적(static) 멤버 함수인 Drw2Shape::DrawCurve에서
전역(global) 함수인 CreateAppropriateBrush를 호출하며,
멤버 함수인 Drw2Shape::Draw는 sh->Type이 CurveTool일 때
Drw2Shape::DrawCurve(G, this)를 호출합니다.
그리고 CDrawing2View의 OnDraw에서 sh.Draw()를 호출합니다.
그런데 화면에 표시되는게 없네요. 저도 뭐가 잘못됐는지 모르겠습니다.
GDI+ 프로그래밍은 처음이라...
고수님들 도움 부탁드립니다.
Status Drw2Shape::DrawCurve(Graphics &G, const Drw2Shape *sh)
{
Brush *pBL;
Status CabSt = CreateAppropriateBrush(&pBL, NULL, sh);
if(CabSt != Ok) return CabSt;
Pen P(pBL, sh->LineWidth);
if(P.GetLastStatus() != Ok) return P.GetLastStatus();
G.DrawCurve(&P, sh->Points, sh->VarDataLen / sizeof(Point), sh->tension);
delete pBL;
return Ok;
}Status CreateAppropriateBrush(Brush **pBL, Brush **pBF, const Drw2Shape *sh)
{
try
{
if(pBL)
{
switch(sh->WhichBrush & LineMask)
{
case LineSolidBrush:
*pBL = new SolidBrush(sh->LineColor1);
break;
case LineGradientBrush:
*pBL = new LinearGradientBrush(sh->rect,
sh->LineColor1, sh->LineColor2, sh->LineGradAngle);
break;
case LineHatchBrush:
*pBL = new HatchBrush(sh->LineHatchStyle, sh->LineColor1, sh->LineColor2);
break;
}
}
if(pBF)
{
switch(sh->WhichBrush & FillMask)
{
case FillSolidBrush:
*pBF = new SolidBrush(sh->FillColor1);
break;
case FillGradientBrush:
*pBF = new LinearGradientBrush(sh->rect,
sh->FillColor1, sh->FillColor2, sh->FillGradAngle);
break;
case FillHatchBrush:
*pBF = new HatchBrush(sh->FillHatchStyle, sh->FillColor1, sh->FillColor2);
break;
}
}
}
catch(...)
{
return OutOfMemory;
}
return Ok;
}void CDrawing2View::OnDraw(CDC* pDC)
{
CDrawing2Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc) return;
Graphics G(pDC->m_hDC);
Drw2Shape sh;
Point pts[] = {Point(25, 25), Point(35, 35), Point(45, 15), Point(50, 70), Point(5, 85), Point(35, 25)};
sh.Type = CurveTool;
sh.LineColor1 = Color(255, 255, 153, 0);
sh.LineColor2 = Color(255, 0, 153, 0);
sh.WhichBrush = LineGradientBrush;
sh.VarDataLen = sizeof(pts);
sh.Points = pts;
sh.LineHatchStyle = HatchStyleWeave;
sh.tension = 0.7;
sh.LineWidth = 30;
sh.Draw(G);
Invalidate();
}Forums:
허걱! 자답
CreateAppropriateBrush에서 BrushStyle에 따라 브러시를 생성하게 만들어 놓고,
BrushStyle을 선에 선형 그래디언트 브러시를 사용하게(LineGradientBrush) 설정한 상태에서
해치스타일을 지정했네요;;;
이제 더블버퍼링이 필요해... 엄청난 깜빡거림
[cppig1995@localhost cppig1995]$ make
make: *** No targets specified and no makefile found. 멈춤.
[cppig1995@localhost cppig1995]$ make idea
make: *** 목표 'idea'를 만들 규칙이 없음. 멈춤.
Real programmers /* don't */ comment their code.
If it was hard to write, it should be /* hard to */ read.