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如何：在 Windows Form 上繪製文字

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以下程式碼範例示範如何使用 Graphics 的 DrawString 方法以在表單上繪製文字。 或者，您也可以使用 TextRenderer 以在表單上繪製文字。 如需詳細資訊，請參閱如何：使用 GDI 繪製文字。

範例

public:
    void DrawString()
    {
        System::Drawing::Graphics^ formGraphics = this->CreateGraphics();
        String^ drawString = "Sample Text";
        System::Drawing::Font^ drawFont =
            gcnew System::Drawing::Font("Arial", 16);
        System::Drawing::SolidBrush^ drawBrush = gcnew
            System::Drawing::SolidBrush(System::Drawing::Color::Black);
        float x = 150.0F;
        float y = 50.0F;
        System::Drawing::StringFormat^ drawFormat =
            gcnew System::Drawing::StringFormat();
        formGraphics->DrawString(drawString, drawFont, drawBrush, x,
            y, drawFormat);
        delete drawFont;
        delete drawBrush;
        delete formGraphics;
    }


public void DrawString()
{
    System.Drawing.Graphics formGraphics = this.CreateGraphics();
    string drawString = "Sample Text";
    System.Drawing.Font drawFont = new System.Drawing.Font("Arial", 16);
    System.Drawing.SolidBrush drawBrush = new System.Drawing.SolidBrush(System.Drawing.Color.Black);
    float x = 150.0F;
    float y = 50.0F;
    System.Drawing.StringFormat drawFormat = new System.Drawing.StringFormat();
    formGraphics.DrawString(drawString, drawFont, drawBrush, x, y, drawFormat);
    drawFont.Dispose();
    drawBrush.Dispose();
    formGraphics.Dispose();
}


Public Sub DrawString()
    Dim formGraphics As System.Drawing.Graphics = Me.CreateGraphics()
    Dim drawString As String = "Sample Text"
    Dim drawFont As New System.Drawing.Font("Arial", 16)
    Dim drawBrush As New _
       System.Drawing.SolidBrush(System.Drawing.Color.Black)
    Dim x As Single = 150.0
    Dim y As Single = 50.0
    Dim drawFormat As New System.Drawing.StringFormat
    formGraphics.DrawString(drawString, drawFont, drawBrush, _
        x, y, drawFormat)
    drawFont.Dispose()
    drawBrush.Dispose()
    formGraphics.Dispose()
End Sub

編譯程式碼

您無法在 Load 事件處理常式中呼叫 DrawString 方法。 如果表單重設大小或被另一個表單遮蔽，則繪製的內容將不會重新繪製。 若要讓內容自動重繪，您應該覆寫 OnPaint 方法。

穩固程式設計

以下條件可能會造成例外狀況：

  • 未安裝 Arial 字型。

另請參閱