ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

MatRead (Function)
Reads the value of a matrix element.
MatDeterminant (Function)
Calculates the determinant of a square matrix (the number of rows is equal to the number of columns).
ThreadSendSignal (Function)
The current thread sends a signal to the specified thread in order to unlock it.
MatWrite (Function)
Writes an element into a matrix.
ThreadState (Function)
Returns the current status of a thread.
ThreadExecute (Function)
Starts the execution of a secondary thread.
MatExist (Function)
Checks the whether the matrix exists in memory.
ComboOpen (Function)
Expands the list of a Combo Box control (single-column or multi-column Combo Box).
ThreadMode (Function)
Changes the management mode of threads.
MatInvert (Function)
Calculates the inverse of a square matrix.
ComboClose (Function)
Closes the drop-down list in a Combo Box control (simple or multi-column Combo Box control).
ThreadPriority (Function)
Returns or modifies the priority level of a thread.
ThreadWaitSignal (Function)
Locks the current thread until it receives a signal from another thread.
TreeTypeItem (Function)
Checks the existence of an element in a TreeView control and returns its type (node or leaf) if the element exists.
MatReadColumn (Function)
Reads the value of all the elements found in a matrix column.
TreeSort (Function)
Sorts the elements found in a TreeView control.
MatReadLine (Function)
Reads the value of all elements found in a matrix row.
TreeDeleteAll (Function)
Deletes all elements from a TreeView control.
TwainState (Function)
Returns the status of the current source.
MatMultiply (Function)
Multiplies two matrices.
TreeDeleteChild (Function)
Deletes the children of an element from a TreeView control without deleting the element itself.
TwainSourceHeight (Function)
Returns the height (in millimeters) of the document captured by a Twain device.
MatNbColumn (Function)
Returns the number of columns found in a matrix.
TreeDelete (Function)
Deletes an element and all its "children" from a TreeView control.
TwainSourceWidth (Function)
Returns the width (in millimeters) of the document captured by a Twain device.