06. 如何用datagridview表示迷宮

• 用datagridview表示迷宮 (執行檔)

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datagridview自設儲存格顏色：

下圖為範例執行結果：(外牆是淺綠色，迷宮中可走的路是白色，不可走的路是海軍藍)

dataGridView2->ColumnCount = m;

dataGridView2->RowCount = p;

for (i=0; i<m; i++)

{ for (j=0; j<p; j++)

{

if (maze[i + 1][j + 1] == 1)

dataGridView1->Rows[i + 1]->Cells[j + 1]->Style->BackColor = Color::Navy;// 海軍藍

}

}

for (i=0; i<m+2; i++)

{ maze[i][0] = 1;

dataGridView1->Rows[i]->Cells[0]->Style->BackColor = Color::Honeydew;// 淺綠

maze[i][p+1] = 1;

dataGridView1->Rows[i]->Cells[p+1]->Style->BackColor = Color::Honeydew;

}

for (j=1; j<p+1; j++)

{ maze[0][j] = 1;

dataGridView1->Rows[0]->Cells[j]->Style->BackColor = Color::Honeydew;

maze[m+1][j] = 1;

dataGridView1->Rows[m+1]->Cells[j]->Style->BackColor = Color::Honeydew;

}

顏色表：http://msdn.microsoft.com/en-us/library/bb980062(VS.95).aspx

Named Color: http://cloford.com/resources/colours/namedcol.htm

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調整datagridview中row與column的size：

手動：

在物件屬性視窗把dataGridView的AutoSizeColumnsMode調整為Fill

在物件屬性視窗把dataGridView的AutoSizeRowsMode調整為AllCells

在物件屬性視窗把dataGridView的Dock調整為Fill

從程式碼設定：

dataGridView->AutoSizeColumnsMode = DataGridViewAutoSizeMode::Fill;

dataGridView->AutoSizeRowsMode = DataGridViewAutoSizeMode::AllCells;

dataGridView->Dock = DockStyle::Fill;

//Nov. 19, 2013

# include <stdio.h>

namespace Mousesinamaze {

...

using namespace System::Runtime::InteropServices;

// 呼叫 Marshal::StringToHGlobalAnsi 轉換 String ^ to char * 時用!

}

private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e)

{ String ^ a;

int m, p, i, j;

char * fname;

if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK) // 順利開啟檔案才繼續往下做

{ a = openFileDialog1->FileName;

char * str2 = (char*) (void*) Marshal::StringToHGlobalAnsi(a);

FILE *fp = fopen(str2,"r"); // 讀檔, 注意第二參數為 "r" (read)

// fopen 需要檔名以 char * 型態為參數

if (fp)

{ fscanf(fp, "%d %d", &m, &p);

listBox1->Items->Add("m="+m+" p="+p);

listBox1->Items->Add("input file :"+a);

dataGridView2->RowCount = m+2;

dataGridView2->ColumnCount = p+2;

for (i=1; i<=m; i++)

{ for (j=1; j<=p; j++)

{ fscanf(fp, "%d", &maze[i][j]);

}

}

fclose(fp); // 讀完檔後請關檔

for (i=0; i<m+2; i++)

{ maze[i][0] = 2;

maze[i][p+1] = 2;

}

for (j=1; j<p+1; j++)

{ maze[0][j] = 2;

maze[m+1][j] = 2;

}

for (i=0; i<m+2; i++)

{ for (j=0; j<p+2; j++)

{ if (maze[i][j] == 2)

//dataGridView2->Rows[i]->Cells[j]->Value = "●";

dataGridView2->Rows[i]->Cells[j]->Style->BackColor = Color::Brown;// 棕色;

else

//dataGridView2->Rows[i]->Cells[j]->Value= maze[i][j];

if (maze[i][j] == 1) dataGridView2->Rows[i]->Cells[j]->Style->BackColor = Color::Navy;// 海軍藍;

else dataGridView2->Rows[i]->Cells[j]->Style->BackColor = Color::Honeydew;// 淺綠;

}

}

}

}

}