C++ Bitmap Constructor from http://msdn.microsoft.com/en-us/library/47591zc7.aspx

Bitmap Constructor (Type, String)

.NET Framework 4.5

  

Initializes a new instance of the Bitmap class from a specified resource.

 

Namespace:   System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll) 

C++ 

 

public:
Bitmap(
	Type^ type, 
	String^ resource
)

Parameters

type

Type:  System::Type

The class used to extract the resource.

resource

Type:  System::String

The name of the resource. 

---

This constructor combines the namespace of the given type with the string name of the resource and looks for a match in the assembly manifest. For example you can pass in the Button type and Button.bmp to this constructor and it will look for a resource named System.Windows.Forms.Button.bmp.

---

The following code example demonstrates how to construct a bitmap from a type, and how to use the Save method. To run this example, paste the code into a Windows Form. Handle the form’s Paint event and call the ConstructFromResourceSaveAsGif method, passing e as PaintEventArgs

C++

 

private:
    void ConstructFromResourceSaveAsGif(PaintEventArgs^ e)
    {
        // Construct a bitmap from the button image resource.
        Bitmap^ bmp1 = gcnew Bitmap(Button::typeid, "Button.bmp");
        String^ savePath =  
            Environment::GetEnvironmentVariable("TEMP") + "\\Button.bmp";

        try
        {
            // Save the image as a GIF.
            bmp1->Save(savePath, System::Drawing::Imaging::ImageFormat::Gif);
        }
        catch (IOException^)
        {
            // Carry on regardless
        }

        // Construct a new image from the GIF file.
        Bitmap^ bmp2 = nullptr;
        if (File::Exists(savePath))
        {
            bmp2 = gcnew Bitmap(savePath);
        }

        // Draw the two images.
        e->Graphics->DrawImage(bmp1, Point(10, 10));

        // If bmp1 did not save to disk, bmp2 may be null 
        if (bmp2 != nullptr)
        {
            e->Graphics->DrawImage(bmp2, Point(10, 40));
        }

        // Dispose of the image files. 
        delete bmp1;
        if (bmp2 != nullptr)
        {
            delete bmp2;
        }
    } 

---

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1 

---

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

转载于:https://www.cnblogs.com/songtzu/archive/2012/12/25/2831716.html