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drawline

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Join Date: Feb 2008

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Nemoticchigga Nemoticchigga is offline

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drawline

Sep 18th, 2008

How do you draw on an image in visual studio 2005 and get it to stay? Ive can get it to draw, but it flickers on resize and disappears when the resize is done. Any ideas?

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niek_e

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Roasting Maven

Re: drawline

Sep 18th, 2008

Could you post the code that you're using?

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Join Date: Feb 2008

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Re: drawline

Sep 18th, 2008

This is the code I use to load the image

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			Map->Image = System::Drawing::Image::FromFile("test_map1.bmp");
			Map->Height = Map->Image->Height;
			Map->Width = Map->Image->Width;
			Map->Left = 0;
			Map->Top = 0;
			this->Height = Map->Image->Height;
			this->Width = Map->Image->Width;
			Map->Image = System::Drawing::Image::FromFile("test_map1.bmp");
			Map->Height = Map->Image->Height;
			Map->Width = Map->Image->Width;
			Map->Left = 0;
			Map->Top = 0;
			this->Height = Map->Image->Height;
			this->Width = Map->Image->Width;

And this is what I want to draw on it.

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			Graphics^ grfx = Map->CreateGraphics();
			Pen^ myPen = gcnew Pen(Color::Yellow, 3);
 
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2 + 10, this->Map->Height/2);
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2, this->Map->Height/2 - 10);
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2 - 10, this->Map->Height/2);
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2, this->Map->Height/2 + 20);
			Graphics^ grfx = Map->CreateGraphics();
			Pen^ myPen = gcnew Pen(Color::Yellow, 3);

			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2 + 10, this->Map->Height/2);
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2, this->Map->Height/2 - 10);
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2 - 10, this->Map->Height/2);
			grfx->DrawLine(myPen, this->Map->Width/2, this->Map->Height/2, this->Map->Width/2, this->Map->Height/2 + 20);