CBitmap

CBitmap is a C++ class that is provided to display bitmaps.

Constructors

CBitmap(void);
CBitmap(const string& strFilename);
CBitmap(const char* pszfilename);

The constructors with a passed filename create a CBitmap object and load the file into memory.

Parameters

• strFilename - filename
• pszFilename - filename

Examples

CBitmap image("/mnt/nand/apps/myapp/myapp.bmp");

string strFile = "/mnt/nand/apps/myapp/myapp.bmp";
CBitmap image(strFile);

CBitmap image;

This constructs the bitmap object without loading any file yet.

Member Functions

LoadBitmp

Opens a specified file.

int LoadBitmap(const string& strFilename);
int LoadBitmap(const char* pszFilename);

Parameters

• strFilename - filename
• pszFilename - filename

Return Value

0 successful -2 file cannot be opened -3 bitmap header cannot be read -4 bitmap info cannot be read -5 width is greater than 640, height is greater than 480, or bitmap is not 8 bits per pixel. -6 color palette cannot be read -7 Too many colors in palette

Remarks

Example

CBitmap bitamp;
if(bitmap.LoadBitmap("/mnt/nand/apps/myapp/myapp.bmp") != 0)
{
    DisplayText(0, 0, "Error loading bitmap");
}

DeleteBitmap

Deletes memory in RAM allocated to the bitmap. This does not delete the file.

void DeleteBitmap(void);

Parameters

Function does not accept any parameters

Retrun Value

Function does not return any result.

Remarks

Example

CBitmap bitmap("/mnt/nand/apps/myapp/myapp.bmp");
bitmap.Draw(0, 0);
SleepSeconds(1);
ClearLCD();
bitmap.DeleteBitmap();